# CVE-2026-76235: cockpit: A memory leak flaw was found in cockpit-ws

CVE-2026-76235 is fixed in 8 products on 1 platform, first by DEBIAN-CVE-2026-76235, released August 28, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-76235
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0059
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 19, 2026

## Description

A memory leak flaw was found in cockpit-ws. The login page handler leaks a heap allocation on every unauthenticated request that carries a CockpitLang cookie, allowing a remote unauthenticated attacker to exhaust memory on the host and cause a denial of service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cockpit Debian 13.5 (trixie) | 337-1+deb13u2 | [DEBIAN-CVE-2026-76235](https://patchblox.com/security/data/fix/linux/debian-cve-2026-76235.md) | Aug 28, 2026 |
| Linux | cockpit Debian 14 | 366-1 | [DEBIAN-CVE-2026-76235](https://patchblox.com/security/data/fix/linux/debian-cve-2026-76235.md) | Aug 28, 2026 |
| Linux | cockpit RHEL 8 | 0:310.10-1.el8_10 | [RHSA-2026:94485](https://patchblox.com/security/data/fix/linux/rhsa-2026-94485.md) | Nov 4, 2026 |
| Linux | cockpit RHEL 9 | 0:356.4-1.el9_8 | [RHSA-2026:94533](https://patchblox.com/security/data/fix/linux/rhsa-2026-94533.md) | Nov 4, 2026 |
| Linux | cockpit almalinux 8 | 310.10-1.el8_10 | [ALSA-2026:94485](https://patchblox.com/security/data/fix/linux/alsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit almalinux 9 | 356.4-1.el9_8 | [ALSA-2026:94533](https://patchblox.com/security/data/fix/linux/alsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit ol 8 | 0:310.10-1.0.1.el8_10 | [ELSA-2026-94485](https://patchblox.com/security/data/fix/linux/elsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit ol 9 | 0:356.4-1.0.1.el9_8 | [ELSA-2026-94533](https://patchblox.com/security/data/fix/linux/elsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit rocky 8 | 0:310.10-1.el8_10 | [RLSA-2026:94485](https://patchblox.com/security/data/fix/linux/rlsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit rocky 9 | 0:356.4-1.el9_8.rocky.0.1 | [RLSA-2026:94533](https://patchblox.com/security/data/fix/linux/rlsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-bridge RHEL 8 | 0:310.10-1.el8_10 | [RHSA-2026:94485](https://patchblox.com/security/data/fix/linux/rhsa-2026-94485.md) | Nov 4, 2026 |
| Linux | cockpit-bridge RHEL 9 | 0:356.4-1.el9_8 | [RHSA-2026:94533](https://patchblox.com/security/data/fix/linux/rhsa-2026-94533.md) | Nov 4, 2026 |
| Linux | cockpit-bridge almalinux 8 | 310.10-1.el8_10 | [ALSA-2026:94485](https://patchblox.com/security/data/fix/linux/alsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit-bridge almalinux 9 | 356.4-1.el9_8 | [ALSA-2026:94533](https://patchblox.com/security/data/fix/linux/alsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-bridge ol 8 | 0:310.10-1.0.1.el8_10 | [ELSA-2026-94485](https://patchblox.com/security/data/fix/linux/elsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit-bridge ol 9 | 0:356.4-1.0.1.el9_8 | [ELSA-2026-94533](https://patchblox.com/security/data/fix/linux/elsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-doc RHEL 8 | 0:310.10-1.el8_10 | [RHSA-2026:94485](https://patchblox.com/security/data/fix/linux/rhsa-2026-94485.md) | Nov 4, 2026 |
| Linux | cockpit-doc RHEL 9 | 0:356.4-1.el9_8 | [RHSA-2026:94533](https://patchblox.com/security/data/fix/linux/rhsa-2026-94533.md) | Nov 4, 2026 |
| Linux | cockpit-doc almalinux 8 | 310.10-1.el8_10 | [ALSA-2026:94485](https://patchblox.com/security/data/fix/linux/alsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit-doc almalinux 9 | 356.4-1.el9_8 | [ALSA-2026:94533](https://patchblox.com/security/data/fix/linux/alsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-doc ol 8 | 0:310.10-1.0.1.el8_10 | [ELSA-2026-94485](https://patchblox.com/security/data/fix/linux/elsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit-doc ol 9 | 0:356.4-1.0.1.el9_8 | [ELSA-2026-94533](https://patchblox.com/security/data/fix/linux/elsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-packagekit RHEL 9 | 0:356.4-1.el9_8 | [RHSA-2026:94533](https://patchblox.com/security/data/fix/linux/rhsa-2026-94533.md) | Nov 4, 2026 |
| Linux | cockpit-packagekit almalinux 9 | 356.4-1.el9_8 | [ALSA-2026:94533](https://patchblox.com/security/data/fix/linux/alsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-packagekit ol 9 | 0:356.4-1.0.1.el9_8 | [ELSA-2026-94533](https://patchblox.com/security/data/fix/linux/elsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-storaged RHEL 9 | 0:356.4-1.el9_8 | [RHSA-2026:94533](https://patchblox.com/security/data/fix/linux/rhsa-2026-94533.md) | Nov 4, 2026 |
| Linux | cockpit-storaged almalinux 9 | 356.4-1.el9_8 | [ALSA-2026:94533](https://patchblox.com/security/data/fix/linux/alsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-storaged ol 9 | 0:356.4-1.0.1.el9_8 | [ELSA-2026-94533](https://patchblox.com/security/data/fix/linux/elsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-system RHEL 8 | 0:310.10-1.el8_10 | [RHSA-2026:94485](https://patchblox.com/security/data/fix/linux/rhsa-2026-94485.md) | Nov 4, 2026 |
| Linux | cockpit-system RHEL 9 | 0:356.4-1.el9_8 | [RHSA-2026:94533](https://patchblox.com/security/data/fix/linux/rhsa-2026-94533.md) | Nov 4, 2026 |
| Linux | cockpit-system almalinux 8 | 310.10-1.el8_10 | [ALSA-2026:94485](https://patchblox.com/security/data/fix/linux/alsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit-system almalinux 9 | 356.4-1.el9_8 | [ALSA-2026:94533](https://patchblox.com/security/data/fix/linux/alsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-system ol 8 | 0:310.10-1.0.1.el8_10 | [ELSA-2026-94485](https://patchblox.com/security/data/fix/linux/elsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit-system ol 9 | 0:356.4-1.0.1.el9_8 | [ELSA-2026-94533](https://patchblox.com/security/data/fix/linux/elsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-ws RHEL 8 | 0:310.10-1.el8_10 | [RHSA-2026:94485](https://patchblox.com/security/data/fix/linux/rhsa-2026-94485.md) | Nov 4, 2026 |
| Linux | cockpit-ws RHEL 9 | 0:356.4-1.el9_8 | [RHSA-2026:94533](https://patchblox.com/security/data/fix/linux/rhsa-2026-94533.md) | Nov 4, 2026 |
| Linux | cockpit-ws almalinux 8 | 310.10-1.el8_10 | [ALSA-2026:94485](https://patchblox.com/security/data/fix/linux/alsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit-ws almalinux 9 | 356.4-1.el9_8 | [ALSA-2026:94533](https://patchblox.com/security/data/fix/linux/alsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-ws ol 8 | 0:310.10-1.0.1.el8_10 | [ELSA-2026-94485](https://patchblox.com/security/data/fix/linux/elsa-2026-94485.md) | Nov 7, 2026 |
| Linux | cockpit-ws ol 9 | 0:356.4-1.0.1.el9_8 | [ELSA-2026-94533](https://patchblox.com/security/data/fix/linux/elsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-ws-selinux RHEL 9 | 0:356.4-1.el9_8 | [RHSA-2026:94533](https://patchblox.com/security/data/fix/linux/rhsa-2026-94533.md) | Nov 4, 2026 |
| Linux | cockpit-ws-selinux almalinux 9 | 356.4-1.el9_8 | [ALSA-2026:94533](https://patchblox.com/security/data/fix/linux/alsa-2026-94533.md) | Nov 7, 2026 |
| Linux | cockpit-ws-selinux ol 9 | 0:356.4-1.0.1.el9_8 | [ELSA-2026-94533](https://patchblox.com/security/data/fix/linux/elsa-2026-94533.md) | Nov 7, 2026 |

---

Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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