Dashboard / CVE-2026-12478

CVE-2026-12478

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 60/100
Published: 2026-07-14 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: Low
I: None
A: Low

Description

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 Classification (1)

References & Advisories (3)

Bug Bounty Relevance

60 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

4.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

EPSS — Exploitation Probability

0.24%
Raw Score 0.002410
Percentile 15.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00241
2026-10-28
0.00241

Intelligence Sources

nvd ref →

External Links