{"action":"Upgrade github.com/free5gc/free5gc to 4.2.2+incompatible or later.","affected":[{"fixed":"4.2.2+incompatible","introduced":"0"}],"component":"github.com/free5gc/free5gc","cve_ids":["CVE-2026-53551"],"ecosystem":"Go","epss":0.00737,"exploited":false,"fixed_versions":["4.2.2+incompatible"],"ghsa_id":"GHSA-qj55-47fp-p62j","id":"tcs_01M5KGS7NPQ5CENX9EX5E8WF7M","modified_at":"2026-08-18T15:00:17.524403027Z","published_at":"2026-08-18T14:32:29Z","references":["https://osv.dev/vulnerability/GO-2026-6161","https://github.com/free5gc/free5gc/security/advisories/GHSA-qj55-47fp-p62j","https://github.com/free5gc/ausf/commit/bfc4a10094dbacbd862baa4686829f3fcc06ce1e","https://github.com/free5gc/ausf/pull/61","https://github.com/free5gc/free5gc/issues/1048","https://github.com/free5gc/ausf/releases/tag/v1.4.5","https://github.com/free5gc/free5gc/releases/tag/v4.2.2"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-6161#Go/github.com/free5gc/free5gc","url":"https://osv.dev/vulnerability/GO-2026-6161"}],"summary":"free5GC AUSF: null byte injection in supiOrSuci causes HTTP 500 internal service failure in github.com/free5gc/ausf"}