{"id":"CVE-2026-2436","title":"Libsoup: libsoup: denial of service via use-after-free in soupserver during tls handshake","summary":"A flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the `soup_server_disconnect()` function frees connection objects prematurely, even if a TLS handshake is still pending. If the…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","cvssSource":"cna","cwe":["CWE-825"],"vendor":"Red Hat","product":"libsoup3","affected":["libsoup3 (all versions)","libsoup (all versions)","libsoup (all versions)","libsoup (all versions)","libsoup (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-03-27T19:47:34.578740Z"},"published":"2026-03-26","updated":"2026-11-05","sourceUpdated":"2026-11-05T19:32:14.900Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-2436","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-2436"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2442909","label":"RHBZ#2442909"},{"url":"https://gitlab.gnome.org/GNOME/libsoup/-/issues/501"}],"tags":["cve.org"],"epss":0.00455,"epssPercentile":0.39652,"ingestedAt":"2026-11-05T22:38:31.552Z","slug":"CVE-2026-2436","body":"## Overview\n\nA flaw was found in libsoup's SoupServer. A remote attacker could exploit a use-after-free vulnerability where the `soup_server_disconnect()` function frees connection objects prematurely, even if a TLS handshake is still pending. If the handshake completes after the connection object has been freed, a dangling pointer is accessed, leading to a server crash and a Denial of Service.\n\n## Affected\n\n- `libsoup3 (all versions)`\n- `libsoup (all versions)`\n- `libsoup (all versions)`\n- `libsoup (all versions)`\n- `libsoup (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}