# CVE-2026-1757: libxml2: A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allo... CVE-2026-1757 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-1757, released February 2, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-1757 - Priority: Routine - CVSS: 6.2 (medium) - EPSS: 0.0022 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Feb 2, 2026 ## Description A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libxml2 Debian 12.15 (bookworm) | 2.9.14+dfsg-1.3~deb12u6 | [DEBIAN-CVE-2026-1757](https://patchblox.com/security/data/fix/linux/debian-cve-2026-1757.md) | Feb 2, 2026 | | Linux | libxml2 Debian 13.5 (trixie) | 2.12.7+dfsg+really2.9.14-2.1+deb13u3 | [DEBIAN-CVE-2026-1757](https://patchblox.com/security/data/fix/linux/debian-cve-2026-1757.md) | Feb 2, 2026 | | Linux | libxml2 Debian 14 | 2.15.2+dfsg-0.1 | [DEBIAN-CVE-2026-1757](https://patchblox.com/security/data/fix/linux/debian-cve-2026-1757.md) | Feb 2, 2026 | | Linux | libxml2 amzn 2023 | 2.10.4-1.amzn2023.0.18 | [ALAS2023-2026-1446](https://patchblox.com/security/data/fix/linux/alas2023-2026-1446.md) | Mar 2, 2026 | | Linux | libxml2 opensuse-leap 15.6 | 2.10.3-150500.5.38.1 | [SUSE-SU-2026:0570-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0570-1.md) | Feb 17, 2026 | | Linux | libxml2 opensuse-leap 16.0 | 2.13.8-160000.4.1 | [OPENSUSE-SU-2026:20312-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20312-1.md) | Mar 4, 2026 | | Linux | libxml2 sles 15.7 | 2.12.10-150700.4.11.1 | [SUSE-SU-2026:0605-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0605-1.md) | Feb 24, 2026 | | Linux | libxml2 sles 16.0 | 2.13.8-160000.4.1 | [SUSE-SU-2026:20631-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20631-1.md) | Mar 4, 2026 | | Linux | libxml2-16 Ubuntu 25.10 (questing) | 2.14.5+dfsg-0.2ubuntu0.2 | [libxml2-16 2.14.5+dfsg-0.2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libxml2-16-2.14.5-dfsg-0.2ubuntu0.2.md) | Apr 23, 2026 | | Linux | libxml2-debuginfo amzn 2023 | 2.10.4-1.amzn2023.0.18 | [ALAS2023-2026-1446](https://patchblox.com/security/data/fix/linux/alas2023-2026-1446.md) | Mar 2, 2026 | | Linux | libxml2-debugsource amzn 2023 | 2.10.4-1.amzn2023.0.18 | [ALAS2023-2026-1446](https://patchblox.com/security/data/fix/linux/alas2023-2026-1446.md) | Mar 2, 2026 | | Linux | libxml2-devel amzn 2023 | 2.10.4-1.amzn2023.0.18 | [ALAS2023-2026-1446](https://patchblox.com/security/data/fix/linux/alas2023-2026-1446.md) | Mar 2, 2026 | | Linux | libxml2-python opensuse-leap 15.6 | 2.10.3-150500.5.38.1 | [SUSE-SU-2026:0570-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0570-1.md) | Feb 17, 2026 | | Linux | libxml2-python opensuse-leap 16.0 | 2.13.8-160000.4.1 | [OPENSUSE-SU-2026:20312-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20312-1.md) | Mar 4, 2026 | | Linux | libxml2-python sles 15.7 | 2.12.10-150700.4.11.1 | [SUSE-SU-2026:0605-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0605-1.md) | Feb 24, 2026 | | Linux | libxml2-python sles 16.0 | 2.13.8-160000.4.1 | [SUSE-SU-2026:20631-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20631-1.md) | Mar 4, 2026 | | Linux | libxml2-static amzn 2023 | 2.10.4-1.amzn2023.0.18 | [ALAS2023-2026-1446](https://patchblox.com/security/data/fix/linux/alas2023-2026-1446.md) | Mar 2, 2026 | | Linux | libxml2-utils Ubuntu 25.10 (questing) | 2.14.5+dfsg-0.2ubuntu0.2 | [libxml2-utils 2.14.5+dfsg-0.2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libxml2-utils-2.14.5-dfsg-0.2ubuntu0.2.md) | Apr 23, 2026 | | Linux | libxslt opensuse-leap 16.0 | 1.1.43-160000.4.1 | [OPENSUSE-SU-2026:20312-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20312-1.md) | Mar 4, 2026 | | Linux | libxslt sles 16.0 | 1.1.43-160000.4.1 | [SUSE-SU-2026:20631-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20631-1.md) | Mar 4, 2026 | | Linux | python-libxml2-python opensuse-leap 15.6 | 2.9.7-150000.3.94.1 | [SUSE-SU-2026:0568-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0568-1.md) | Feb 17, 2026 | | Linux | python3-libxml2 Ubuntu 25.10 (questing) | 2.14.5+dfsg-0.2ubuntu0.2 | [python3-libxml2 2.14.5+dfsg-0.2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-python3-libxml2-2.14.5-dfsg-0.2ubuntu0.2.md) | Apr 23, 2026 | | Linux | python3-libxml2 amzn 2023 | 2.10.4-1.amzn2023.0.18 | [ALAS2023-2026-1446](https://patchblox.com/security/data/fix/linux/alas2023-2026-1446.md) | Mar 2, 2026 | | Linux | python3-libxml2-debuginfo amzn 2023 | 2.10.4-1.amzn2023.0.18 | [ALAS2023-2026-1446](https://patchblox.com/security/data/fix/linux/alas2023-2026-1446.md) | Mar 2, 2026 | --- Data as of 2026-11-08T19:12:23Z UTC. 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