# CVE-2026-6861: Emacs: emacs: memory corruption vulnerability when processing svg css CVE-2026-6861 is fixed in 16 products on 1 platform, first by emacs 1:29.3+1-1ubuntu2+esm4, released April 22, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-6861 - Priority: High - CVSS: 7.1 (Moderate) - EPSS: 0.0011 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Apr 22, 2026 - Weakness: Off-by-one Error - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-6861 ## Description A flaw was found in GNU Emacs. This vulnerability, a memory corruption issue, occurs when Emacs processes specially crafted SVG (Scalable Vector Graphics) CSS (Cascading Style Sheets) data. A local user could exploit this by convincing a victim to open a malicious SVG file, which may lead to a denial of service (DoS) or potentially information disclosure. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | emacs Debian 13.5 (trixie) | 1:30.1+1-6+deb13u1 | [DEBIAN-CVE-2026-6861](https://patchblox.com/security/data/fix/linux/debian-cve-2026-6861.md) | Apr 22, 2026 | | Linux | emacs Debian 14 | 1:30.2+1-3 | [DEBIAN-CVE-2026-6861](https://patchblox.com/security/data/fix/linux/debian-cve-2026-6861.md) | Apr 22, 2026 | | Linux | emacs Ubuntu 24.04.5 LTS (noble) | 1:29.3+1-1ubuntu2+esm4 | [emacs 1:29.3+1-1ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-emacs-1-29.3-1-1ubuntu2-esm4.md) | Apr 22, 2026 | | Linux | emacs Ubuntu 26.04.1 LTS (resolute) | 1:30.2+1-2ubuntu1+esm1 | [emacs 1:30.2+1-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-emacs-1-30.2-1-2ubuntu1-esm1.md) | Apr 22, 2026 | | Linux | emacs amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-bin-common Ubuntu 24.04.5 LTS (noble) | 1:29.3+1-1ubuntu2+esm4 | [emacs-bin-common 1:29.3+1-1ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-emacs-bin-common-1-29.3-1-1ubuntu2-esm4.md) | Apr 22, 2026 | | Linux | emacs-bin-common Ubuntu 26.04.1 LTS (resolute) | 1:30.2+1-2ubuntu1+esm1 | [emacs-bin-common 1:30.2+1-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-emacs-bin-common-1-30.2-1-2ubuntu1-esm1.md) | Apr 22, 2026 | | Linux | emacs-common Ubuntu 24.04.5 LTS (noble) | 1:29.3+1-1ubuntu2+esm4 | [emacs-common 1:29.3+1-1ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-emacs-common-1-29.3-1-1ubuntu2-esm4.md) | Apr 22, 2026 | | Linux | emacs-common Ubuntu 26.04.1 LTS (resolute) | 1:30.2+1-2ubuntu1+esm1 | [emacs-common 1:30.2+1-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-emacs-common-1-30.2-1-2ubuntu1-esm1.md) | Apr 22, 2026 | | Linux | emacs-common amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-common-debuginfo amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-debuginfo amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-debugsource amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-devel amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-el Ubuntu 24.04.5 LTS (noble) | 1:29.3+1-1ubuntu2+esm4 | [emacs-el 1:29.3+1-1ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-emacs-el-1-29.3-1-1ubuntu2-esm4.md) | Apr 22, 2026 | | Linux | emacs-el Ubuntu 26.04.1 LTS (resolute) | 1:30.2+1-2ubuntu1+esm1 | [emacs-el 1:30.2+1-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-emacs-el-1-30.2-1-2ubuntu1-esm1.md) | Apr 22, 2026 | | Linux | emacs-filesystem amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-gtk Ubuntu 24.04.5 LTS (noble) | 1:29.3+1-1ubuntu2+esm4 | [emacs-gtk 1:29.3+1-1ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-emacs-gtk-1-29.3-1-1ubuntu2-esm4.md) | Apr 22, 2026 | | Linux | emacs-gtk Ubuntu 26.04.1 LTS (resolute) | 1:30.2+1-2ubuntu1+esm1 | [emacs-gtk 1:30.2+1-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-emacs-gtk-1-30.2-1-2ubuntu1-esm1.md) | Apr 22, 2026 | | Linux | emacs-lucid Ubuntu 24.04.5 LTS (noble) | 1:29.3+1-1ubuntu2+esm4 | [emacs-lucid 1:29.3+1-1ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-emacs-lucid-1-29.3-1-1ubuntu2-esm4.md) | Apr 22, 2026 | | Linux | emacs-lucid Ubuntu 26.04.1 LTS (resolute) | 1:30.2+1-2ubuntu1+esm1 | [emacs-lucid 1:30.2+1-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-emacs-lucid-1-30.2-1-2ubuntu1-esm1.md) | Apr 22, 2026 | | Linux | emacs-lucid amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-lucid-debuginfo amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-nox Ubuntu 24.04.5 LTS (noble) | 1:29.3+1-1ubuntu2+esm4 | [emacs-nox 1:29.3+1-1ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-emacs-nox-1-29.3-1-1ubuntu2-esm4.md) | Apr 22, 2026 | | Linux | emacs-nox Ubuntu 26.04.1 LTS (resolute) | 1:30.2+1-2ubuntu1+esm1 | [emacs-nox 1:30.2+1-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-emacs-nox-1-30.2-1-2ubuntu1-esm1.md) | Apr 22, 2026 | | Linux | emacs-nox amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-nox-debuginfo amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | | Linux | emacs-pgtk Ubuntu 24.04.5 LTS (noble) | 1:29.3+1-1ubuntu2+esm4 | [emacs-pgtk 1:29.3+1-1ubuntu2+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-emacs-pgtk-1-29.3-1-1ubuntu2-esm4.md) | Apr 22, 2026 | | Linux | emacs-pgtk Ubuntu 26.04.1 LTS (resolute) | 1:30.2+1-2ubuntu1+esm1 | [emacs-pgtk 1:30.2+1-2ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-emacs-pgtk-1-30.2-1-2ubuntu1-esm1.md) | Apr 22, 2026 | | Linux | emacs-terminal amzn 2023 | 1:28.2-3.amzn2023.0.12 | [ALAS2023-2026-3195](https://patchblox.com/security/data/fix/linux/alas2023-2026-3195.md) | Nov 7, 2026 | --- Data as of 2026-11-08T13:06:02Z UTC. 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