| Name | CVE-2026-3832 |
| Description | A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1135319 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| gnutls28 (PTS) | bullseye | 3.7.1-5+deb11u5 | fixed |
| bullseye (security) | 3.7.1-5+deb11u9 | fixed | |
| bookworm | 3.7.9-2+deb12u6 | fixed | |
| bookworm (security) | 3.7.9-2+deb12u7 | fixed | |
| trixie | 3.8.9-3+deb13u3 | vulnerable | |
| trixie (security) | 3.8.9-3+deb13u4 | fixed | |
| forky, sid | 3.8.13-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| gnutls28 | source | bullseye | (not affected) | |||
| gnutls28 | source | bookworm | (not affected) | |||
| gnutls28 | source | trixie | 3.8.9-3+deb13u4 | |||
| gnutls28 | source | (unstable) | 3.8.13-1 | 1135319 |
[bookworm] - gnutls28 <not-affected> (Vulnerable code introduced later)
[bullseye] - gnutls28 <not-affected> (Vulnerable code introduced later)
https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-12
https://gitlab.com/gnutls/gnutls/-/issues/1801
https://gitlab.com/gnutls/gnutls/-/issues/1812
Introduced with: https://gitlab.com/gnutls/gnutls/-/commit/ae404fe8488dee424876b5963c00d7e041672415 (3.8.8)
Fixed by: https://gitlab.com/gnutls/gnutls/-/commit/731861b9de8dccaf7d3b0c1446833051e48670c2 (3.8.13)
Test: https://gitlab.com/gnutls/gnutls/-/commit/d52d5f4f383e8c5d8e9a03334f2421ff35d37d2e (3.8.13)