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CVE-2026-39383

Gotenberg is an API-based document conversion tool. In version 8.29.1, an unauthenticated attacker with network access can force the server to make outbound HTTP POST requests to arbitrary internal or external destinations by supplying a crafted URL in the Gotenberg-Webhook-Url request header. The FilterDeadline function in filter.go is intended to gate outbound URLs, but when both the allow-list and deny-list are empty (the default configuration), it returns nil unconditionally and permits any
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0c0caf88c9380affa94a94aa9ed6cf2ebf8d4b97b593650f1cd3b2ebdad5f9a0
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"gotenberg","vendor":"gotenberg","versions":[{"status":"affected","version":"< 8.31.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:be8267a548ea62534dafc782dd93cc3b16711f7bf451306a62ff00fb403751c3 · sha256:2f514e7e11f42022… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:be8267a548ea62534dafc782dd93cc3b16711f7bf451306a62ff00fb403751c3 · sha256:2f514e7e11f42022… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:be8267a548ea62534dafc782dd93cc3b16711f7bf451306a62ff00fb403751c3 · sha256:2f514e7e11f42022… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-5vh4-rgv7-p9g4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-5vh4-rgv7-p9g4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:be8267a548ea62534dafc782dd93cc3b16711f7bf451306a62ff00fb403751c3 · sha256:2f514e7e11f42022… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-5vh4-rgv7-p9g4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:be8267a548ea62534dafc782dd93cc3b16711f7bf451306a62ff00fb403751c3 · sha256:2f514e7e11f42022… · /containers/adp/0/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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