{"id":"GHSA-x7qq-m748-8p2c","revision":null,"records":[{"revision":"a407bfb42c124194bf3caef86e6db697","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-49820","aliases":[],"title":"Probo has an open redirect bypass via path normalization","description":"Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Probo's `saferedirect` package validates redirect URLs used across authentication flows (OIDC, SAML, session transfer, OAuth connectors, and trust-center magic links). Prior to version 0.19.3.1, the validator only inspected the second character of relative paths, so a URL like `/../\\evil.com` passed validation because the second character is `.`. Go's `http.Redirect` normalizes this path to `/\\evil.com` before setting the `Location` header. Browsers can interpret the backslash as a host separator and redirect the user to an external domain (`https://evil.com`), bypassing the intended same-origin restriction. This enables open-redirect phishing: an attacker can craft a `continue` parameter (or embed a malicious URL in a session-transfer token) that appears to originate from a trusted Probo domain but redirects victims elsewhere. This is fixed in `go.probo.inc/probo` 0.193.1 by normalizing relative paths with `path.Clean` before validation, rejecting backslashes (including percent-encoded `%5c`) anywhere in the path, and re-checking the normalized result for protocol-relative and backslash prefixes. Self-hosted deployments should upgrade to probod v0.194.1 or later. SaaS deployments on getprobo.com are patched. No practical workaround is available for self-hosted installations.","state":0,"publishedAt":"2026-08-13T14:36:34.645+00:00","modifiedAt":"2026-08-14T15:40:32.062+00:00","affected":[{"ecosystem":"Vendor product","name":"probo","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"getprobo\",\n                    \"product\": \"probo\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.193.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","score":4.7,"severity":"MEDIUM"}],"references":["https://github.com/getprobo/probo/security/advisories/GHSA-x7qq-m748-8p2c","https://github.com/getprobo/probo/blob/main/SECURITY_NOTES.md"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-49820","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-49820","identifiers":["CVE-2026-49820"]},"retained":false,"historicalAffected":[]},{"revision":"9f990bbeee4b468089d02912129eac75","observedAt":"2026-11-07T11:32:00.15+00:00","statement":{"source":"euvd","id":"EUVD-2026-58095","aliases":["CVE-2026-49820","GHSA-x7qq-m748-8p2c"],"title":"Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Probo's `saferedirect` package validates redirect URLs used across authentication flows (OIDC, SAML, session transfer, OAuth …","description":"Probo is a self-hostable governance, risk, and compliance (GRC) platform built for engineering and security teams. Probo's `saferedirect` package validates redirect URLs used across authentication flows (OIDC, SAML, session transfer, OAuth connectors, and trust-center magic links). Prior to version 0.19.3.1, the validator only inspected the second character of relative paths, so a URL like `/../\\evil.com` passed validation because the second character is `.`. Go's `http.Redirect` normalizes this path to `/\\evil.com` before setting the `Location` header. Browsers can interpret the backslash as a host separator and redirect the user to an external domain (`https://evil.com`), bypassing the intended same-origin restriction. This enables open-redirect phishing: an attacker can craft a `continue` parameter (or embed a malicious URL in a session-transfer token) that appears to originate from a trusted Probo domain but redirects victims elsewhere. This is fixed in `go.probo.inc/probo` 0.193.1 by normalizing relative paths with `path.Clean` before validation, rejecting backslashes (including percent-encoded `%5c`) anywhere in the path, and re-checking the normalized result for protocol-relative and backslash prefixes. Self-hosted deployments should upgrade to probod v0.194.1 or later. SaaS deployments on getprobo.com are patched. No practical workaround is available for self-hosted installations.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","score":4.7,"severity":null}],"references":["https://github.com/getprobo/probo/security/advisories/GHSA-x7qq-m748-8p2c","https://github.com/getprobo/probo/blob/main/SECURITY_NOTES.md"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-58095","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Aug 13, 2026, 2:36:34 PM","dateUpdated":"Aug 14, 2026, 3:40:32 PM"},"relatedAdvisories":[],"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. 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Prior to version 0.19.3.1, the validator only inspected the second character of relative paths, so a URL like `/../\\evil.com` passed validation because the second character is `.`. Go's `http.Redirect` normalizes this path to `/\\evil.com` before setting the `Location` header. Browsers can interpret the backslash as a host separator and redirect the user to an external domain (`https://evil.com`), bypassing the intended same-origin restriction. This enables open-redirect phishing: an attacker can craft a `continue` parameter (or embed a malicious URL in a session-transfer token) that appears to originate from a trusted Probo domain but redirects victims elsewhere. This is fixed in `go.probo.inc/probo` 0.193.1 by normalizing relative paths with `path.Clean` before validation, rejecting backslashes (including percent-encoded `%5c`) anywhere in the path, and re-checking the normalized result for protocol-relative and backslash prefixes. Self-hosted deployments should upgrade to probod v0.194.1 or later. SaaS deployments on getprobo.com are patched. No practical workaround is available for self-hosted installations.","state":0,"publishedAt":"2026-08-13T15:19:41.41+00:00","modifiedAt":"2026-10-24T16:10:00.153+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","score":4.7,"severity":"MEDIUM"}],"references":["https://github.com/getprobo/probo/blob/main/SECURITY_NOTES.md","https://github.com/getprobo/probo/security/advisories/GHSA-x7qq-m748-8p2c"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-49820","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-601"],"productCriteria":[],"sourceDates":{"published":"2026-08-13T15:19:41.410","lastModified":"2026-10-24T16:10:00.153"},"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-2026-49820","identifiers":["CVE-2026-49820"]},"retained":false,"historicalAffected":[]},{"revision":"ab3335601baa4187b683f36ec915317b","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-x7qq-m748-8p2c","aliases":["CVE-2026-49820","GO-2026-5861"],"title":"Probo has an open redirect bypass via path normalization","description":"### Impact\nProbo's `saferedirect` package validates redirect URLs used across authentication flows (OIDC, SAML, session transfer, OAuth connectors, and trust-center magic links). The validator only inspected the second character of relative paths, so a URL like `/../\\evil.com` passed validation because the second character is `.`. Go's `http.Redirect` normalizes this path to `/\\evil.com` before setting the `Location` header. Browsers can interpret the backslash as a host separator and redirect the user to an external domain (`https://evil.com`), bypassing the intended same-origin restriction. This enables open-redirect phishing: an attacker can craft a `continue` parameter (or embed a malicious URL in a session-transfer token) that appears to originate from a trusted Probo domain but redirects victims elsewhere.\n\n### Patches\nFixed in `go.probo.inc/probo` by normalizing relative paths with `path.Clean` before validation, rejecting backslashes (including\npercent-encoded `%5c`) anywhere in the path, and re-checking the normalized result for protocol-relative and backslash prefixes.\n\nSelf-hosted deployments should upgrade to **probod v0.194.1** or later.\n\nSaaS deployments on getprobo.com are patched.\n\n### Workarounds\nNo practical workaround for self-hosted installations. Upgrade to the patched release.","state":0,"publishedAt":"2026-06-30T18:31:50+00:00","modifiedAt":"2026-07-07T16:11:26.2969097+00:00","affected":[{"ecosystem":"Go","name":"go.probo.inc/probo","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.204.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/getprobo/probo/security/advisories/GHSA-x7qq-m748-8p2c","https://github.com/getprobo/probo","https://github.com/getprobo/probo/blob/main/SECURITY_NOTES.md"],"sourceUrl":"https://github.com/advisories/GHSA-x7qq-m748-8p2c","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-x7qq-m748-8p2c","identifiers":["GHSA-x7qq-m748-8p2c","CVE-2026-49820","GO-2026-5861"]},"retained":false,"historicalAffected":[]},{"revision":"ce79b989ebd245ba844d27aadb00cedf","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5861","aliases":["CVE-2026-49820","GHSA-x7qq-m748-8p2c"],"title":"Probo has an open redirect bypass via path normalization in go.probo.inc/probo","description":"Probo has an open redirect bypass via path normalization in go.probo.inc/probo","state":0,"publishedAt":"2026-07-07T15:26:37+00:00","modifiedAt":"2026-07-07T16:01:31.6452725+00:00","affected":[{"ecosystem":"Go","name":"go.probo.inc/probo","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.204.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/getprobo/probo/security/advisories/GHSA-x7qq-m748-8p2c","https://github.com/getprobo/probo/blob/main/SECURITY_NOTES.md"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5861","license":"OSV · upstream source license applies","key":"osv:GO-2026-5861","identifiers":["GO-2026-5861","CVE-2026-49820","GHSA-x7qq-m748-8p2c"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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