CVE Explorer
CVE-2026-40280
Gotenberg is an API-based document conversion tool. In versions 8.30.1 and earlier, the default private-IP deny-lists for the --webhook-deny-list and --api-download-from-deny-list flags use a case-sensitive regular expression (^https?://) to match URL schemes. Because Go's net/url.Parse() normalizes the scheme to lowercase before establishing the outbound TCP connection, an attacker can bypass the deny-list by simply capitalizing part of the URL scheme (e.g., HTTP://, HTTPS://, or Http://). This
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":"<= 8.30.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:789c1921f036df38e430ebb399c3478ed58ba25ebcce42cd1fa63fd391c3a979 · sha256:a738fbe0d7ecbeb6… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.8,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","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:H/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:789c1921f036df38e430ebb399c3478ed58ba25ebcce42cd1fa63fd391c3a979 · sha256:a738fbe0d7ecbeb6… · /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_v5cweurn:baitaphish:normalized-source-record:v2:789c1921f036df38e430ebb399c3478ed58ba25ebcce42cd1fa63fd391c3a979 · sha256:a738fbe0d7ecbeb6… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/advisories/GHSA-jjwv-57xh-xr6r","tags":["x_refsource_MISC"],"url":"https://github.com/advisories/GHSA-jjwv-57xh-xr6r"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:789c1921f036df38e430ebb399c3478ed58ba25ebcce42cd1fa63fd391c3a979 · sha256:a738fbe0d7ecbeb6… · /containers/cna/references/2
{"name":"https://github.com/gotenberg/gotenberg/commit/3f01ca18d3cc21375a1e2da4b5a3f261c8548e47","tags":["x_refsource_MISC"],"url":"https://github.com/gotenberg/gotenberg/commit/3f01ca18d3cc21375a1e2da4b5a3f261c8548e47"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:789c1921f036df38e430ebb399c3478ed58ba25ebcce42cd1fa63fd391c3a979 · sha256:a738fbe0d7ecbeb6… · /containers/cna/references/1
{"name":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-5q7p-7jgv-ww56","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-5q7p-7jgv-ww56"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:789c1921f036df38e430ebb399c3478ed58ba25ebcce42cd1fa63fd391c3a979 · sha256:a738fbe0d7ecbeb6… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-5q7p-7jgv-ww56"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:789c1921f036df38e430ebb399c3478ed58ba25ebcce42cd1fa63fd391c3a979 · sha256:a738fbe0d7ecbeb6… · /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.