{"id":"CVE-2026-55701","revision":null,"records":[{"revision":"0e7a63bfcbd44555a027842646877d02","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-55701","aliases":[],"title":"OpenTelemetry githubreceiver silently ignores configured required_headers authentication","description":"The OpenTelemetry Collector Contrib repository contains components for the OpenTelemetry Collector. Prior to 0.151.0, the githubreceiver validates the receiver/githubreceiver/config.go RequiredHeaders configuration at startup, but receiver/githubreceiver/trace_receiver.go handleReq() does not check those headers on incoming webhook requests. An unauthenticated sender can therefore bypass an operator's required_headers authentication control and submit arbitrary webhook payloads. When the Secret field is empty, github.ValidatePayload also skips HMAC validation, leaving the webhook endpoint without either configured authentication mechanism. Successful exploitation can inject fabricated CI/CD trace data into the observability pipeline. This issue is fixed in version 0.151.0.","state":0,"publishedAt":"2026-09-15T15:05:15.715+00:00","modifiedAt":"2026-09-17T14:45:43.493+00:00","affected":[{"ecosystem":"Vendor product","name":"opentelemetry-collector-contrib","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"open-telemetry\",\n                    \"product\": \"opentelemetry-collector-contrib\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.151.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"open-telemetry\",\n                    \"product\": \"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.151.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.9,"severity":"MEDIUM"}],"references":["https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxc","https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/47854","https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/54143ccd14f5ebd74ca741739d2099c7fbebbd98","https://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.151.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55701","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-55701","identifiers":["CVE-2026-55701"]},"retained":false,"historicalAffected":[]},{"revision":"36f16f2bfba24d1a9d6e1b659449aec0","observedAt":"2026-11-11T14:04:20.854+00:00","statement":{"source":"euvd","id":"EUVD-2026-78778","aliases":["CVE-2026-55701","GHSA-w5cv-pw74-4rxc"],"title":"The OpenTelemetry Collector Contrib repository contains components for the OpenTelemetry Collector. Prior to 0.151.0, the githubreceiver validates the receiver/githubreceiver/config.go RequiredHeaders configuration at startup, but receiver/…","description":"The OpenTelemetry Collector Contrib repository contains components for the OpenTelemetry Collector. Prior to 0.151.0, the githubreceiver validates the receiver/githubreceiver/config.go RequiredHeaders configuration at startup, but receiver/githubreceiver/trace_receiver.go handleReq() does not check those headers on incoming webhook requests. An unauthenticated sender can therefore bypass an operator's required_headers authentication control and submit arbitrary webhook payloads. When the Secret field is empty, github.ValidatePayload also skips HMAC validation, leaving the webhook endpoint without either configured authentication mechanism. Successful exploitation can inject fabricated CI/CD trace data into the observability pipeline. This issue is fixed in version 0.151.0.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.9,"severity":null}],"references":["https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxc","https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/47854","https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/54143ccd14f5ebd74ca741739d2099c7fbebbd98","https://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.151.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-78778","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 15, 2026, 3:05:15 PM","dateUpdated":"Sep 17, 2026, 2:45:43 PM"},"relatedAdvisories":[{"id":"RHSA-2026:63152","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-47256","CVE-2026-55701"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-78778","identifiers":["EUVD-2026-78778","CVE-2026-55701","GHSA-w5cv-pw74-4rxc"]},"retained":false,"historicalAffected":[]},{"revision":"3994782124264b98acc9d36b047ebea4","observedAt":"2026-10-25T14:19:05.298+00:00","statement":{"source":"nvd","id":"CVE-2026-55701","aliases":[],"title":"The OpenTelemetry Collector Contrib repository contains components for the OpenTelemetry Collector. Prior to 0.151.0, the githubreceiver validates the receiver/githubreceiver/config.go RequiredHeaders configuration at startup, but receiver/…","description":"The OpenTelemetry Collector Contrib repository contains components for the OpenTelemetry Collector. Prior to 0.151.0, the githubreceiver validates the receiver/githubreceiver/config.go RequiredHeaders configuration at startup, but receiver/githubreceiver/trace_receiver.go handleReq() does not check those headers on incoming webhook requests. An unauthenticated sender can therefore bypass an operator's required_headers authentication control and submit arbitrary webhook payloads. When the Secret field is empty, github.ValidatePayload also skips HMAC validation, leaving the webhook endpoint without either configured authentication mechanism. Successful exploitation can inject fabricated CI/CD trace data into the observability pipeline. This issue is fixed in version 0.151.0.","state":0,"publishedAt":"2026-09-15T16:17:15.617+00:00","modifiedAt":"2026-09-30T17:43:24.057+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.9,"severity":"MEDIUM"}],"references":["https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/54143ccd14f5ebd74ca741739d2099c7fbebbd98","https://github.com/open-telemetry/opentelemetry-collector-contrib/pull/47854","https://github.com/open-telemetry/opentelemetry-collector-contrib/releases/tag/v0.151.0","https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxc"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55701","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-863"],"productCriteria":[],"sourceDates":{"published":"2026-09-15T16:17:15.617","lastModified":"2026-09-30T17:43:24.057"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-55701","identifiers":["CVE-2026-55701"]},"retained":false,"historicalAffected":[]},{"revision":"4128b646da74438d99057cce21c033c0","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-w5cv-pw74-4rxc","aliases":["CVE-2026-55701","GO-2026-5690"],"title":"opentelemetry-collector-contrib: githubreceiver silently ignores configured required_headers authentication","description":"## githubreceiver Silently Ignores Configured required_headers Authentication\n\n### Summary\n\nThe githubreceiver webhook handler does not enforce the `required_headers` configuration. Headers are validated at startup (config rejects empty keys/values) but never checked on incoming requests. This follows the same pattern as [GHSA-prf6-xjxh-p698](https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-prf6-xjxh-p698) (awsfirehosereceiver auth bypass). Verified against current main.\n\n### Details\n\nIn `receiver/githubreceiver/config.go`, the `RequiredHeaders` field is defined (line 45) and validated at startup (lines 93-101). But `receiver/githubreceiver/trace_receiver.go` in `handleReq()` (lines 131-185) never references `RequiredHeaders`.\n\nThe gitlabreceiver enforces the same config correctly at `receiver/gitlabreceiver/traces_receiver.go:266-270`:\n\n    for key, value := range gtr.cfg.WebHook.RequiredHeaders {\n        if r.Header.Get(key) != string(value) {\n            return \"\", fmt.Errorf(\"%w: %s\", errInvalidHeader, key)\n        }\n    }\n\n### Amplifying factor\n\nThe `Secret` field defaults to empty and has no validation requiring it to be set. With an empty secret, `github.ValidatePayload` skips HMAC validation entirely. An operator who configures `required_headers` as their authentication mechanism (without setting `secret`) has zero authentication on the webhook endpoint.\n\n### Impact\n\nAn attacker can send arbitrary webhook payloads to the githubreceiver endpoint, bypassing the operator configured authentication. This allows injecting fake CI/CD trace data into the observability pipeline.\n\n### Suggested Fix\n\nAdd RequiredHeaders enforcement to `handleReq()`, matching the gitlabreceiver pattern.","state":0,"publishedAt":"2026-06-18T15:05:14+00:00","modifiedAt":"2026-06-25T23:11:38.4826325+00:00","affected":[{"ecosystem":"Go","name":"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.151.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxc","https://github.com/open-telemetry/opentelemetry-collector-contrib"],"sourceUrl":"https://github.com/advisories/GHSA-w5cv-pw74-4rxc","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-w5cv-pw74-4rxc","identifiers":["GHSA-w5cv-pw74-4rxc","CVE-2026-55701","GO-2026-5690"]},"retained":false,"historicalAffected":[]},{"revision":"6a24290cdad3444c96b02e57bd78e226","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5690","aliases":["CVE-2026-55701","GHSA-w5cv-pw74-4rxc"],"title":"opentelemetry-collector-contrib: githubreceiver silently ignores configured required_headers authentication in github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver","description":"opentelemetry-collector-contrib: githubreceiver silently ignores configured required_headers authentication in github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver","state":0,"publishedAt":"2026-06-25T22:34:38+00:00","modifiedAt":"2026-06-25T23:01:26.8364487+00:00","affected":[{"ecosystem":"Go","name":"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/githubreceiver","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.151.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-w5cv-pw74-4rxc"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5690","license":"OSV · upstream source license applies","key":"osv:GO-2026-5690","identifiers":["GO-2026-5690","CVE-2026-55701","GHSA-w5cv-pw74-4rxc"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-12T02:56:45.8822264+00:00","complete":true,"records":1779,"lastAttemptAt":"2026-11-12T02:56:45.8822264+00:00","lastSuccessAt":"2026-11-12T02:56:46.0427292+00:00","error":null,"lastVerifiedAt":"2026-11-12T02:56:46.0427301+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-64752486c567b55b31fb0d7225f5222bcd0019564ac0ac5f0649e242c7b19299-c8f0a5eb97b437649f83f6fe632ec849fcb249052407d33e475e82c88b318dfb","complete":true,"records":424535,"lastAttemptAt":"2026-11-12T02:56:45.3610802+00:00","lastSuccessAt":"2026-11-12T02:56:45.341976+00:00","error":null,"lastVerifiedAt":"2026-11-12T02:56:45.3610802+00:00","snapshotPublishedAt":"2026-11-12T02:25:26+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-3bce114846604d92838a2dc302341627","complete":false,"records":13760,"lastAttemptAt":"2026-11-12T03:06:53.8778262+00:00","lastSuccessAt":"2026-11-12T03:06:52.8+00:00","error":"754 identifier lookups failed; latest failures include AccessDenied (HTTP 403). Other identifiers were checked independently.","lastVerifiedAt":"2026-11-12T03:06:52.8+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13040,"expectedIdentifiers":13813,"failedIdentifiers":754},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-12T02:56:45.8822264+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-12T02:56:45.8822264+00:00","lastSuccessAt":"2026-11-12T02:56:46.0434469+00:00","error":null,"lastVerifiedAt":"2026-11-12T02:56:46.0434471+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-729a419ccc5f41d8a3330c7c6e8b6a5e","complete":true,"records":13760,"lastAttemptAt":"2026-11-12T02:57:11.7691852+00:00","lastSuccessAt":"2026-11-12T02:57:11.766+00:00","error":null,"lastVerifiedAt":"2026-11-12T02:57:11.766+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13813,"expectedIdentifiers":13813,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-3562b6c78fd1bd0f0b55daf66a0926ae24f65e462df7f6d928caad458fc696bf","complete":true,"records":9947,"lastAttemptAt":"2026-11-12T02:56:45.7363501+00:00","lastSuccessAt":"2026-11-11T04:27:43.6877707+00:00","error":null,"lastVerifiedAt":"2026-11-12T02:56:45.7363501+00:00","snapshotPublishedAt":"2026-11-11T03:32:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-456002455e0ab94bb92c95476d4e6d175c104cd594749982afd96c893728ecbc","complete":true,"records":2010,"lastAttemptAt":"2026-11-12T02:56:45.5271491+00:00","lastSuccessAt":"2026-11-11T02:36:58.1276999+00:00","error":null,"lastVerifiedAt":"2026-11-12T02:56:45.5271491+00:00","snapshotPublishedAt":"2026-11-11T01:17:51+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-baa8362b4daf9e5f39d5563775a55935e7b442c0735d33274a921579ce4a0d66","complete":true,"records":3093,"lastAttemptAt":"2026-11-12T02:56:45.8443473+00:00","lastSuccessAt":"2026-11-11T13:00:02.5446881+00:00","error":null,"lastVerifiedAt":"2026-11-12T02:56:45.8443473+00:00","snapshotPublishedAt":"2026-11-11T12:47:47+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-685fe7fb2b690656c910a1ea42a9d294e8353311ac8ecfa691a9b0ff1b328804","complete":true,"records":231695,"lastAttemptAt":"2026-11-12T02:56:45.6384803+00:00","lastSuccessAt":"2026-11-11T21:58:47.7265713+00:00","error":null,"lastVerifiedAt":"2026-11-12T02:56:45.6384803+00:00","snapshotPublishedAt":"2026-11-11T21:48:35+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}