CVE-2026-102558

high

Description

A flaw was found in libsoup. When max-incoming-payload-size is unlimited (0), SoupWebsocketConnection could grow its incoming GByteArray based on an attacker-controlled frame length until the length wrapped, causing a heap buffer overflow while reading frame data.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2543274

https://access.redhat.com/security/cve/CVE-2026-102558

Details

Source: Mitre, NVD

Published: 2026-09-29

Updated: 2026-09-29

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:C

Severity: High

CVSS v3

Base Score: 8.6

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H