A flaw was found in glib-networking. When establishing connections using Transport Layer Security (TLS) version 1.3, the client-side session cache does not limit the number of session tickets retained for a single host. A malicious server can exploit this by sending excessive session ticket messages, causing the client application to continuously consume memory. This unbounded memory growth can exhaust system memory, resulting in a Denial of Service (DoS).
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 7.5 · red hatNVD modified 2026-10-30 04:08
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 3
- https://access.redhat.com/security/cve/CVE-2026-103963 vdb-entry, x_refsource_redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2465656 issue-tracking, x_refsource_redhat
- https://gitlab.gnome.org/GNOME/glib-networking/-/merge_requests/288