{"id":"CVE-2026-61801","published":"2026-10-08T17:17:17.433","lastModified":"2026-10-08T21:35:53.890","description":"The `github.com/moby/sys/user` package provides Go utilities for parsing and looking up entries in Unix-style user and group database files. Versions before 0.4.1 do not sufficiently limit entries when parsing `/etc/passwd`- or `/etc/group`-style files, allowing an attacker who can supply a specially crafted file to cause excessive memory consumption and potentially terminate the affected process due to an out-of-memory condition. This issue is patched in version 0.4.1. As a workaround, avoid parsing attacker-controlled user or group database files, or validate and limit untrusted input before parsing it.","cvssScore":5.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-400"],"vendors":[],"products":[],"references":[{"url":"https://github.com/moby/sys/commit/85a71bbe1faa36c552a960e6a5f3d0cfb632fbbe","tags":[]},{"url":"https://github.com/moby/sys/pull/221","tags":[]},{"url":"https://github.com/moby/sys/security/advisories/GHSA-mjcv-p78q-w5fw","tags":[]}],"exploitRefs":[{"url":"https://github.com/moby/sys/commit/85a71bbe1faa36c552a960e6a5f3d0cfb632fbbe","tags":[]},{"url":"https://github.com/moby/sys/pull/221","tags":[]},{"url":"https://github.com/moby/sys/security/advisories/GHSA-mjcv-p78q-w5fw","tags":[]}],"hasPoc":true,"ai":null}