libsoup vulnerabilities in Ubuntu
Two vulnerabilities in libsoup on Ubuntu 22.04, 24.04, 26.04 and 26.10 could let remote attackers cause crashes or expose sensitive information (CVE-2026-12478, CVE-2026-102555).
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Vulnerability1 · 1 read
CVE-2026-12478
- CVSS 3.1
- 4.8 medium
- EPSS
- <1%p34
- Published
- ·
- Modified
Description · NVD
The fix for CVE-2026-0716 (commit 6ff7ef0, libsoup 3.6.6) placed the integer overflow guard inside the if (masked) block, leaving unmasked server-to-client frames unprotected. A malicious WebSocket server can send a crafted unmasked frame with a payload length near UINT64_MAX to trigger an OOB read in a libsoup-based client when max_incoming_payload_size is set to 0.
- Weakness
- CWE-125
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L