{"id":"EUVD-2026-30160","enisaUuid":"6a27f9b8-7823-3ac9-bdf9-f0988988eaa8","description":"azureauthextension is the Azure Authenticator Extension. From 0.124.0 to 0.150.0, a server-side authentication bypass in azureauthextension allows any party who holds a single valid Azure access token for any scope the collector\u0027s configured identity can mint for to authenticate to any OpenTelemetry receiver that uses auth: azure_auth. The extension\u0027s Authenticate method does not validate incoming bearer tokens as JWTs. Instead, it calls its own configured credential to obtain an access token and compares the client\u0027s token to the result with string equality — and the scope for that server-side token request is taken from the client-supplied Host header. As a result, a token minted for any Azure resource the service principal has ever been issued a token for (ARM, Graph, Key Vault, Storage, etc.) will authenticate to the collector if the attacker picks a matching Host. Tokens are replayable for the full issued lifetime (commonly several hours for managed identity tokens).","datePublished":"May 13, 2026, 8:12:18 PM","dateUpdated":"May 14, 2026, 12:52:53 PM","baseScore":8.1,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","references":"https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-pjv4-3c63-699f\n","aliases":"CVE-2026-42602\nGHSA-pjv4-3c63-699f\n","assigner":"GitHub_M","epss":0.22,"enisaIdProduct":[{"id":"0f30d782-97fe-3fcb-b0e6-a1bdd4a3ea1a","product":{"name":"opentelemetry-collector-contrib","vendor":{"name":"open-telemetry"}},"product_version":"0.124.0, ≤ 0.150.0"}],"enisaIdVendor":[{"id":"f8237c6b-2bd9-3376-9bf2-584460005132","vendor":{"name":"open-telemetry"}}],"enisaIdVulnerability":[{"id":"02dc83c1-ea68-3758-b351-525c5d4cadc1","vulnerability":{"id":"CVE-2026-42602","description":"azureauthextension is the Azure Authenticator Extension. From 0.124.0 to 0.150.0, a server-side authentication bypass in azureauthextension allows any party who holds a single valid Azure access token for any scope the collector\u0027s configured identity can mint for to authenticate to any OpenTelemetry receiver that uses auth: azure_auth. The extension\u0027s Authenticate method does not validate incoming bearer tokens as JWTs. Instead, it calls its own configured credential to obtain an access token and compares the client\u0027s token to the result with string equality — and the scope for that server-side token request is taken from the client-supplied Host header. As a result, a token minted for any Azure resource the service principal has ever been issued a token for (ARM, Graph, Key Vault, Storage, etc.) will authenticate to the collector if the attacker picks a matching Host. Tokens are replayable for the full issued lifetime (commonly several hours for managed identity tokens).","datePublished":"May 13, 2026, 8:12:18 PM","dateUpdated":"May 14, 2026, 12:52:53 PM","status":"PUBLISHED","baseScore":8.1,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","references":"https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-pjv4-3c63-699f\n","enisa_id":"EUVD-2026-30160\n","assigner":"GitHub_M","epss":0.22,"dataProcessed":"Oct 27, 2026, 7:17:12 AM","vulnerabilityProduct":[{"id":"0ffea509-3c15-35b3-b852-e4da2cf44f1b","product":{"name":"opentelemetry-collector-contrib","vendor":{"name":"open-telemetry"}},"product_version":"0.124.0, ≤ 0.150.0"}],"vulnerabilityVendor":[{"id":"79ef45d2-6c1d-3726-b49f-297a077f6331","vendor":{"name":"open-telemetry"}}]}},{"id":"bb89b0e3-d6eb-32e2-8df0-cbf145ec5609","vulnerability":{"id":"GHSA-pjv4-3c63-699f","description":"opentelemetry-collector-contrib\u0027s azureauthextension Authenticate method does not validate bearer tokens, allowing auth bypass via replay","datePublished":"May 6, 2026, 10:32:43 PM","dateUpdated":"May 14, 2026, 8:42:40 PM","baseScore":0.0,"references":"https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-pjv4-3c63-699f\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-42602\nhttps://github.com/open-telemetry/opentelemetry-collector-contrib\n","enisa_id":"EUVD-2026-30160\n","aliases":"CVE-2026-42602\nGHSA-pjv4-3c63-699f\n","epss":0.0,"dataProcessed":"Oct 25, 2026, 1:55:50 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}