Improper Output Neutralization for Logs vulnerability in team-alembic AshAuthentication allows an unauthenticated attacker to forge application log entries by submitting a password reset identity containing newlines or control characters.
\nAshAuthentication.Strategy.Password.RequestPasswordReset.run/3 interpolates the identity argument, the email or username taken straight from the reset request, into its Logger.warning/1 heredocs without escaping, truncating or type-restricting it. The resource logged beside it is passed through inspect/1, which would have neutralized the value. A newline in the identity therefore ends the log record, and everything after it is written as a line of its own, so an attacker chooses the severity tag and the content of entries that appear to have come from the application.
This issue affects ash_authentication: from 4.2.0 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.
" }, { "base64": false, "type": "text/markdown", "value": "Improper Output Neutralization for Logs vulnerability in team-alembic AshAuthentication allows an unauthenticated attacker to forge application log entries by submitting a password reset identity containing newlines or control characters.\n\n`AshAuthentication.Strategy.Password.RequestPasswordReset.run/3` interpolates the `identity` argument, the email or username taken straight from the reset request, into its `Logger.warning/1` heredocs without escaping, truncating or type-restricting it. The resource logged beside it is passed through `inspect/1`, which would have neutralized the value. A newline in the identity therefore ends the log record, and everything after it is written as a line of its own, so an attacker chooses the severity tag and the content of entries that appear to have come from the application.\n\nThis issue affects ash_authentication: from 4.2.0 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14." } ], "value": "Improper Output Neutralization for Logs vulnerability in team-alembic AshAuthentication allows an unauthenticated attacker to forge application log entries by submitting a password reset identity containing newlines or control characters.\n\nAshAuthentication.Strategy.Password.RequestPasswordReset.run/3 interpolates the identity argument, the email or username taken straight from the reset request, into its Logger.warning/1 heredocs without escaping, truncating or type-restricting it. The resource logged beside it is passed through inspect/1, which would have neutralized the value. A newline in the identity therefore ends the log record, and everything after it is written as a line of its own, so an attacker chooses the severity tag and the content of entries that appear to have come from the application.\n\nThis issue affects ash_authentication: from 4.2.0 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14." } ], "impacts": [ { "capecId": "CAPEC-93", "descriptions": [ { "lang": "en", "value": "CAPEC-93 Log Injection-Tampering-Forging" } ] } ], "metrics": [ { "cvssV4_0": { "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 6.3, "baseSeverity": "MEDIUM", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-117", "description": "CWE-117 Improper Output Neutralization for Logs", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-09-17T13:09:11.572Z" }, "references": [ { "tags": [ "vendor-advisory", "related" ], "url": "https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-wg7g-r393-vr3g" }, { "name": "EEF CNA record for CVE-2026-86522", "tags": [ "related" ], "url": "https://cna.erlef.org/cves/CVE-2026-86522.html" }, { "name": "OSV record EEF-CVE-2026-86522", "tags": [ "related" ], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-86522" }, { "name": "Introducing commit 3954f27 in team-alembic/ash_authentication", "tags": [ "related" ], "url": "https://github.com/team-alembic/ash_authentication/commit/3954f277929712755aef57a4a3a821688f121316" }, { "name": "Fix commit fd19358 in team-alembic/ash_authentication", "tags": [ "patch" ], "url": "https://github.com/team-alembic/ash_authentication/commit/fd19358bf0eee53ef13dcf17cc499bd4fb393981" }, { "name": "Fix commit 57c7cc3 in team-alembic/ash_authentication", "tags": [ "patch" ], "url": "https://github.com/team-alembic/ash_authentication/commit/57c7cc3236bef0fa9da19cb315414f216488866d" } ], "source": { "discovery": "INTERNAL" }, "title": "Log injection via an unescaped password reset identity in AshAuthentication" }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-17T18:27:45.711185Z", "id": "CVE-2026-86522", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-17T18:27:51.681Z" } } ] } }