{"action":"Upgrade github.com/free5gc/udm to 1.4.2 or later.","affected":[{"fixed":"1.4.2","introduced":"0"}],"component":"github.com/free5gc/udm","cve_ids":["CVE-2026-33191"],"ecosystem":"Go","epss":0.0036,"exploited":false,"fixed_versions":["1.4.2"],"ghsa_id":"GHSA-p9hg-pq3q-v9gv","id":"tcs_01M5KGFY6JNZD1G0D90AE0JTM7","modified_at":"2026-03-23T18:45:17.674466Z","published_at":"2026-03-23T18:14:51Z","references":["https://osv.dev/vulnerability/GO-2026-4763","https://github.com/free5gc/free5gc/security/advisories/GHSA-p9hg-pq3q-v9gv","https://nvd.nist.gov/vuln/detail/CVE-2026-33191","https://github.com/free5gc/udm/commit/88de9fa74a1b3f3522e53b4cfa2d184712ffa4ee","https://github.com/free5gc/udm/pull/79"],"severity":{"label":"high","score":8.6},"sources":[{"source":"osv","source_id":"GO-2026-4763","url":"https://osv.dev/vulnerability/GO-2026-4763"},{"source":"nvd","source_id":"CVE-2026-33191","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33191"}],"summary":"free5GC UDM vulnerable to null byte injection in URL path parameters causing 500 Internal Server Error in github.com/free5gc/udm"}