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CVE-2026-33307

Mod_gnutls is a TLS module for Apache HTTPD based on GnuTLS. In versions prior to 0.12.3 and 0.13.0, code for client certificate verification imported the certificate chain sent by the client into a fixed size `gnutls_x509_crt_t x509[]` array without checking the number of certificates is less than or equal to the array size. `gnutls_x509_crt_t` is a `typedef` for a pointer to an opaque GnuTLS structure created using with `gnutls_x509_crt_init()` before importing certificate data into it, so no
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:deae6d28f7beef02381ae99b6fa95a30e138ceebd2d53342cb88e7e89f5cefc8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"mod_gnutls","vendor":"airtower-luna","versions":[{"status":"affected","version":"< 0.12.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d60ff47c120ee9982c9e697a1680c84606d4bcf981cd7ae9d051259a23a8ecfe · sha256:6ea6d1beacfb415e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d60ff47c120ee9982c9e697a1680c84606d4bcf981cd7ae9d051259a23a8ecfe · sha256:6ea6d1beacfb415e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-121","description":"CWE-121: Stack-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d60ff47c120ee9982c9e697a1680c84606d4bcf981cd7ae9d051259a23a8ecfe · sha256:6ea6d1beacfb415e… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/airtower-luna/mod_gnutls/commit/bf4f08c49acae528e97885082cdee460f4534dc1","tags":["x_refsource_MISC"],"url":"https://github.com/airtower-luna/mod_gnutls/commit/bf4f08c49acae528e97885082cdee460f4534dc1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d60ff47c120ee9982c9e697a1680c84606d4bcf981cd7ae9d051259a23a8ecfe · sha256:6ea6d1beacfb415e… · /containers/cna/references/1
{"name":"https://github.com/airtower-luna/mod_gnutls/security/advisories/GHSA-gjpm-55p4-c76r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/airtower-luna/mod_gnutls/security/advisories/GHSA-gjpm-55p4-c76r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d60ff47c120ee9982c9e697a1680c84606d4bcf981cd7ae9d051259a23a8ecfe · sha256:6ea6d1beacfb415e… · /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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