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CVE-2026-41671

Admidio is an open-source user management solution. Prior to version 5.0.9, the OIDC token introspection endpoint (/modules/sso/index.php/oidc/introspect) always returns {"active": true} for every request, regardless of whether a valid token is provided, whether the token is expired, revoked, or completely fabricated. The endpoint performs no authentication of the calling resource server and no validation of the submitted token. Any resource server that relies on this introspection endpoint to v
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a2efb525d1def8a2002c8c1b789d56176bc3ad49207e69193fc74b318e92f5c3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"admidio","vendor":"Admidio","versions":[{"status":"affected","version":"< 5.0.9"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e4e45f9e75c4260e372c9e8c0bb58a3728e85f69c954d4a3ba43be1e2757edae · sha256:178e09d59ffa3286… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e4e45f9e75c4260e372c9e8c0bb58a3728e85f69c954d4a3ba43be1e2757edae · sha256:178e09d59ffa3286… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"CWE-287: Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e4e45f9e75c4260e372c9e8c0bb58a3728e85f69c954d4a3ba43be1e2757edae · sha256:178e09d59ffa3286… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/Admidio/admidio/releases/tag/v5.0.9","tags":["x_refsource_MISC"],"url":"https://github.com/Admidio/admidio/releases/tag/v5.0.9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e4e45f9e75c4260e372c9e8c0bb58a3728e85f69c954d4a3ba43be1e2757edae · sha256:178e09d59ffa3286… · /containers/cna/references/1
{"name":"https://github.com/Admidio/admidio/security/advisories/GHSA-9xx5-cv6j-x533","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Admidio/admidio/security/advisories/GHSA-9xx5-cv6j-x533"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e4e45f9e75c4260e372c9e8c0bb58a3728e85f69c954d4a3ba43be1e2757edae · sha256:178e09d59ffa3286… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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