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CVE-2026-66399

phpMyFAQ before 4.1.6 contains a privilege escalation vulnerability in GroupController::updateMembers() that allows administrators with only group-management permissions to join privileged groups without verification of required rights. Attackers can add themselves to pre-existing groups holding user-management rights and immediately inherit those permissions to modify or delete user accounts.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7fee4c376eb90929488cca45607a0207baec57dec9138c48de5f6a3347af969b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3447d10e769dcf1bd7175c0e2a098a4e62fa8afeec2aec4e868fc930b9b6a476 · sha256:ade63904fb916f48… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.5,"baseSeverity":"HIGH","privilegesRequired":"HIGH","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3447d10e769dcf1bd7175c0e2a098a4e62fa8afeec2aec4e868fc930b9b6a476 · sha256:ade63904fb916f48… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"phpMyFAQ","vendor":"thorsten","versions":[{"lessThan":"4.1.6","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"4.1.6","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3447d10e769dcf1bd7175c0e2a098a4e62fa8afeec2aec4e868fc930b9b6a476 · sha256:ade63904fb916f48… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3447d10e769dcf1bd7175c0e2a098a4e62fa8afeec2aec4e868fc930b9b6a476 · sha256:ade63904fb916f48… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.5,"baseSeverity":"HIGH","privilegesRequired":"HIGH","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3447d10e769dcf1bd7175c0e2a098a4e62fa8afeec2aec4e868fc930b9b6a476 · sha256:ade63904fb916f48… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-269","description":"Improper Privilege Management","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3447d10e769dcf1bd7175c0e2a098a4e62fa8afeec2aec4e868fc930b9b6a476 · sha256:ade63904fb916f48… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["exploit"],"url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-28cc-v39j-vr95"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3447d10e769dcf1bd7175c0e2a098a4e62fa8afeec2aec4e868fc930b9b6a476 · sha256:ade63904fb916f48… · /containers/adp/0/references/0
{"name":"GitHub Security Advisory (GHSA-28cc-v39j-vr95)","tags":["vendor-advisory"],"url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-28cc-v39j-vr95"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3447d10e769dcf1bd7175c0e2a098a4e62fa8afeec2aec4e868fc930b9b6a476 · sha256:ade63904fb916f48… · /containers/cna/references/0
{"name":"VulnCheck Advisory: phpMyFAQ before 4.1.6 Privilege Escalation via Group Membership","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/phpmyfaq-before-privilege-escalation-via-group-membership"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3447d10e769dcf1bd7175c0e2a098a4e62fa8afeec2aec4e868fc930b9b6a476 · sha256:ade63904fb916f48… · /containers/cna/references/1

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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