# CVE-2026-3832: gnutls28: A flaw was found in gnutls

CVE-2026-3832 is fixed in 16 products on 1 platform, first by RHSA-2026:26409, released May 4, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-3832
- Priority: High
- CVSS: 8.2 (low)
- EPSS: 0.0080
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 30, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gnutls RHEL 10 | 3.8.9-9.el10_0.19 | [RHSA-2026:26409](https://patchblox.com/security/data/fix/linux/rhsa-2026-26409.md) | May 4, 2026 |
| Linux | gnutls RHEL 9 | 0:3.8.10-4.el9_8 | [RHSA-2026:20612](https://patchblox.com/security/data/fix/linux/rhsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls almalinux 10 | 3.8.10-4.el10_2 | [ALSA-2026:20613](https://patchblox.com/security/data/fix/linux/alsa-2026-20613.md) | May 26, 2026 |
| Linux | gnutls almalinux 9 | 3.8.10-4.el9_8 | [ALSA-2026:20612](https://patchblox.com/security/data/fix/linux/alsa-2026-20612.md) | May 26, 2026 |
| Linux | gnutls ol 10 | 0:3.8.10-4.el10_2 | [ELSA-2026-20613](https://patchblox.com/security/data/fix/linux/elsa-2026-20613.md) | Jul 17, 2026 |
| Linux | gnutls ol 9 | 0:3.8.10-4.el9_8 | [ELSA-2026-20612](https://patchblox.com/security/data/fix/linux/elsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls rocky 10 | 0:3.8.10-4.el10_2 | [RLSA-2026:20613](https://patchblox.com/security/data/fix/linux/rlsa-2026-20613.md) | Jun 5, 2026 |
| Linux | gnutls rocky 9 | 0:3.8.10-4.el9_8 | [RLSA-2026:20612](https://patchblox.com/security/data/fix/linux/rlsa-2026-20612.md) | Jun 2, 2026 |
| Linux | gnutls-bin Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.9 | [gnutls-bin 3.7.3-4ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gnutls-bin-3.7.3-4ubuntu1.9.md) | May 27, 2026 |
| Linux | gnutls-bin Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.6 | [gnutls-bin 3.8.3-1.1ubuntu3.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gnutls-bin-3.8.3-1.1ubuntu3.6.md) | May 27, 2026 |
| Linux | gnutls-bin Ubuntu 25.10 (questing) | 3.8.9-3ubuntu2.2 | [gnutls-bin 3.8.9-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gnutls-bin-3.8.9-3ubuntu2.2.md) | May 27, 2026 |
| Linux | gnutls-bin Ubuntu 26.04.1 LTS (resolute) | 3.8.12-2ubuntu1.1 | [gnutls-bin 3.8.12-2ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gnutls-bin-3.8.12-2ubuntu1.1.md) | May 7, 2026 |
| Linux | gnutls-c++ RHEL 9 | 0:3.8.10-4.el9_8 | [RHSA-2026:20612](https://patchblox.com/security/data/fix/linux/rhsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls-c++ almalinux 10 | 3.8.10-4.el10_2 | [ALSA-2026:20613](https://patchblox.com/security/data/fix/linux/alsa-2026-20613.md) | May 26, 2026 |
| Linux | gnutls-c++ almalinux 9 | 3.8.10-4.el9_8 | [ALSA-2026:20612](https://patchblox.com/security/data/fix/linux/alsa-2026-20612.md) | May 26, 2026 |
| Linux | gnutls-c++ ol 10 | 0:3.8.10-4.el10_2 | [ELSA-2026-20613](https://patchblox.com/security/data/fix/linux/elsa-2026-20613.md) | Jul 17, 2026 |
| Linux | gnutls-c++ ol 9 | 0:3.8.10-4.el9_8 | [ELSA-2026-20612](https://patchblox.com/security/data/fix/linux/elsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls-dane RHEL 9 | 0:3.8.10-4.el9_8 | [RHSA-2026:20612](https://patchblox.com/security/data/fix/linux/rhsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls-dane almalinux 10 | 3.8.10-4.el10_2 | [ALSA-2026:20613](https://patchblox.com/security/data/fix/linux/alsa-2026-20613.md) | May 26, 2026 |
| Linux | gnutls-dane almalinux 9 | 3.8.10-4.el9_8 | [ALSA-2026:20612](https://patchblox.com/security/data/fix/linux/alsa-2026-20612.md) | May 26, 2026 |
| Linux | gnutls-dane ol 10 | 0:3.8.10-4.el10_2 | [ELSA-2026-20613](https://patchblox.com/security/data/fix/linux/elsa-2026-20613.md) | Jul 17, 2026 |
| Linux | gnutls-dane ol 9 | 0:3.8.10-4.el9_8 | [ELSA-2026-20612](https://patchblox.com/security/data/fix/linux/elsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls-devel RHEL 9 | 0:3.8.10-4.el9_8 | [RHSA-2026:20612](https://patchblox.com/security/data/fix/linux/rhsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls-devel almalinux 10 | 3.8.10-4.el10_2 | [ALSA-2026:20613](https://patchblox.com/security/data/fix/linux/alsa-2026-20613.md) | May 26, 2026 |
| Linux | gnutls-devel almalinux 9 | 3.8.10-4.el9_8 | [ALSA-2026:20612](https://patchblox.com/security/data/fix/linux/alsa-2026-20612.md) | May 26, 2026 |
| Linux | gnutls-devel ol 10 | 0:3.8.10-4.el10_2 | [ELSA-2026-20613](https://patchblox.com/security/data/fix/linux/elsa-2026-20613.md) | Jul 17, 2026 |
| Linux | gnutls-devel ol 9 | 0:3.8.10-4.el9_8 | [ELSA-2026-20612](https://patchblox.com/security/data/fix/linux/elsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls-fips almalinux 10 | 3.8.10-4.el10_2 | [ALSA-2026:20613](https://patchblox.com/security/data/fix/linux/alsa-2026-20613.md) | May 26, 2026 |
| Linux | gnutls-fips ol 10 | 0:3.8.10-4.el10_2 | [ELSA-2026-20613](https://patchblox.com/security/data/fix/linux/elsa-2026-20613.md) | Jul 17, 2026 |
| Linux | gnutls-utils RHEL 9 | 0:3.8.10-4.el9_8 | [RHSA-2026:20612](https://patchblox.com/security/data/fix/linux/rhsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls-utils almalinux 10 | 3.8.10-4.el10_2 | [ALSA-2026:20613](https://patchblox.com/security/data/fix/linux/alsa-2026-20613.md) | May 26, 2026 |
| Linux | gnutls-utils almalinux 9 | 3.8.10-4.el9_8 | [ALSA-2026:20612](https://patchblox.com/security/data/fix/linux/alsa-2026-20612.md) | May 26, 2026 |
| Linux | gnutls-utils ol 10 | 0:3.8.10-4.el10_2 | [ELSA-2026-20613](https://patchblox.com/security/data/fix/linux/elsa-2026-20613.md) | Jul 17, 2026 |
| Linux | gnutls-utils ol 9 | 0:3.8.10-4.el9_8 | [ELSA-2026-20612](https://patchblox.com/security/data/fix/linux/elsa-2026-20612.md) | Jun 24, 2026 |
| Linux | gnutls28 Debian 13.5 (trixie) | 3.8.9-3+deb13u4 | [DEBIAN-CVE-2026-3832](https://patchblox.com/security/data/fix/linux/debian-cve-2026-3832.md) | May 15, 2026 |
| Linux | gnutls28 Debian 14 | 3.8.13-1 | [DEBIAN-CVE-2026-3832](https://patchblox.com/security/data/fix/linux/debian-cve-2026-3832.md) | May 15, 2026 |
| Linux | guile-gnutls Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.9 | [guile-gnutls 3.7.3-4ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-guile-gnutls-3.7.3-4ubuntu1.9.md) | May 27, 2026 |
| Linux | libgnutls-dane0 Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.9 | [libgnutls-dane0 3.7.3-4ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgnutls-dane0-3.7.3-4ubuntu1.9.md) | May 27, 2026 |
| Linux | libgnutls-dane0t64 Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.6 | [libgnutls-dane0t64 3.8.3-1.1ubuntu3.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgnutls-dane0t64-3.8.3-1.1ubuntu3.6.md) | May 27, 2026 |
| Linux | libgnutls-dane0t64 Ubuntu 25.10 (questing) | 3.8.9-3ubuntu2.2 | [libgnutls-dane0t64 3.8.9-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libgnutls-dane0t64-3.8.9-3ubuntu2.2.md) | May 27, 2026 |
| Linux | libgnutls-dane0t64 Ubuntu 26.04.1 LTS (resolute) | 3.8.12-2ubuntu1.1 | [libgnutls-dane0t64 3.8.12-2ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgnutls-dane0t64-3.8.12-2ubuntu1.1.md) | May 7, 2026 |
| Linux | libgnutls-openssl27 Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.9 | [libgnutls-openssl27 3.7.3-4ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgnutls-openssl27-3.7.3-4ubuntu1.9.md) | May 27, 2026 |
| Linux | libgnutls-openssl27t64 Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.6 | [libgnutls-openssl27t64 3.8.3-1.1ubuntu3.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgnutls-openssl27t64-3.8.3-1.1ubuntu3.6.md) | May 27, 2026 |
| Linux | libgnutls-openssl27t64 Ubuntu 25.10 (questing) | 3.8.9-3ubuntu2.2 | [libgnutls-openssl27t64 3.8.9-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libgnutls-openssl27t64-3.8.9-3ubuntu2.2.md) | May 27, 2026 |
| Linux | libgnutls-openssl27t64 Ubuntu 26.04.1 LTS (resolute) | 3.8.12-2ubuntu1.1 | [libgnutls-openssl27t64 3.8.12-2ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgnutls-openssl27t64-3.8.12-2ubuntu1.1.md) | May 7, 2026 |
| Linux | libgnutls30 Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.9 | [libgnutls30 3.7.3-4ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgnutls30-3.7.3-4ubuntu1.9.md) | May 27, 2026 |
| Linux | libgnutls30t64 Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.6 | [libgnutls30t64 3.8.3-1.1ubuntu3.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgnutls30t64-3.8.3-1.1ubuntu3.6.md) | May 27, 2026 |
| Linux | libgnutls30t64 Ubuntu 25.10 (questing) | 3.8.9-3ubuntu2.2 | [libgnutls30t64 3.8.9-3ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libgnutls30t64-3.8.9-3ubuntu2.2.md) | May 27, 2026 |
| Linux | libgnutls30t64 Ubuntu 26.04.1 LTS (resolute) | 3.8.12-2ubuntu1.1 | [libgnutls30t64 3.8.12-2ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgnutls30t64-3.8.12-2ubuntu1.1.md) | May 7, 2026 |
| Linux | libgnutlsxx28 Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.9 | [libgnutlsxx28 3.7.3-4ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgnutlsxx28-3.7.3-4ubuntu1.9.md) | May 27, 2026 |

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