{"id":"CVE-2026-111253","title":"Dnf5daemon-server: dnf5: dnf5daemon-server: missing session-owner check allows foreign d-bus callers to replace another client's resolved transaction","summary":"A flaw was found in dnf5daemon-server. Session methods on dynamically exported D-Bus session objects do not verify that the caller is the unique sender that created the session. A local attacker can modify another user's live package-man…","severity":"medium","cvss":6.6,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H","cvssSource":"cna","cwe":["CWE-862"],"vendor":"Red Hat","product":"dnf5","affected":["dnf5 (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T16:46:12.036788Z"},"published":"2026-11-05","updated":"2026-11-05","sourceUpdated":"2026-11-05T16:46:26.191Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111253","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-111253"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2553683","label":"RHBZ#2553683"},{"url":"https://github.com/rpm-software-management/dnf5/commit/46a4a8ad8d34af91ec2add6bb29e487571ea6c85"}],"tags":["cve.org"],"ingestedAt":"2026-11-05T22:38:31.402Z","slug":"CVE-2026-111253","body":"## Overview\n\nA flaw was found in dnf5daemon-server. Session methods on dynamically exported D-Bus session objects do not verify that the caller is the unique sender that created the session. A local attacker can modify another user's live package-management session and replace its resolved transaction plan. If the legitimate session party later authorizes execution, the root daemon may apply the attacker-chosen package operations.\n\n## Affected\n\n- `dnf5 (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nUntil a fixed build is available, avoid leaving interactive dnf5daemon sessions open on multi-user systems where untrusted local accounts can access the system bus, and close sessions promptly after use.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":36.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}