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CVE-2026-66398

phpMyFAQ before v4.1.6 contains a remote code execution vulnerability in the configuration API that allows authenticated administrators with CONFIGURATION_EDIT and ATTACHMENT_ADD privileges to write arbitrary PHP files by manipulating the upgrade.lastDownloadedPackage setting. Attackers can upload a malicious ZIP file as an attachment, point the updater configuration to its stored path, and extract it into the application root to achieve code execution as the web server user.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7d69174ef76158d62f39200022c940dcb0de25f9411c99e6c92a0327c90c57d4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
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:a62b59c3de003bddf9c4b02e0c1e622a585da6eceea8e71a201a9168bb05b4ac · sha256:f7ff7c6cbc0cc9bc… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.4,"baseSeverity":"CRITICAL","privilegesRequired":"HIGH","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a62b59c3de003bddf9c4b02e0c1e622a585da6eceea8e71a201a9168bb05b4ac · sha256:f7ff7c6cbc0cc9bc… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-494","description":"Download of Code Without Integrity Check","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a62b59c3de003bddf9c4b02e0c1e622a585da6eceea8e71a201a9168bb05b4ac · sha256:f7ff7c6cbc0cc9bc… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["exploit"],"url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-4fv7-8rr6-rf2w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a62b59c3de003bddf9c4b02e0c1e622a585da6eceea8e71a201a9168bb05b4ac · sha256:f7ff7c6cbc0cc9bc… · /containers/adp/0/references/0
{"name":"GitHub Security Advisory (GHSA-4fv7-8rr6-rf2w)","tags":["vendor-advisory"],"url":"https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-4fv7-8rr6-rf2w"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a62b59c3de003bddf9c4b02e0c1e622a585da6eceea8e71a201a9168bb05b4ac · sha256:f7ff7c6cbc0cc9bc… · /containers/cna/references/0
{"name":"VulnCheck Advisory: phpMyFAQ before 4.1.6 Remote Code Execution via Configuration API","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/phpmyfaq-before-remote-code-execution-via-configuration-api"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a62b59c3de003bddf9c4b02e0c1e622a585da6eceea8e71a201a9168bb05b4ac · sha256:f7ff7c6cbc0cc9bc… · /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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