{"cve":"CVE-2026-61801","nvd":{"published":"2026-10-08T17:17:17.433","modified":"2026-10-08T21:35:53.890","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-400"],"references":["https://github.com/moby/sys/commit/85a71bbe1faa36c552a960e6a5f3d0cfb632fbbe","https://github.com/moby/sys/pull/221","https://github.com/moby/sys/security/advisories/GHSA-mjcv-p78q-w5fw"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-61801","score":0.00117,"percentile":0.01638,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-mjcv-p78q-w5fw","url":"https://osv.dev/vulnerability/GHSA-mjcv-p78q-w5fw","summary":"github.com/moby/sys/user has a possible DoS via unbounded parsing of user and group database files","modified":"2026-10-19T21:40:47.349593935Z","packages":[{"ecosystem":"Go","name":"github.com/moby/sys/user","purl":"pkg:golang/github.com/moby/sys/user","ranges":["<0.4.1"],"fixed":["0.4.1"]}]},{"id":"GO-2026-6686","url":"https://osv.dev/vulnerability/GO-2026-6686","summary":"Possible DoS via unbounded parsing of user and group database files in github.com/moby/sys/user","modified":"2026-10-19T21:31:35.458679290Z","packages":[{"ecosystem":"Go","name":"github.com/moby/sys/user","purl":"pkg:golang/github.com/moby/sys/user","ranges":["<0.4.1"],"fixed":["0.4.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}