Dashboard / CVE-2026-66337

CVE-2026-66337

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 73/100
Published: 2026-07-24 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

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

Description

A flaw was found in libsoup. An unsigned integer underflow in the soup_filter_input_stream_read_until() function causes a heap buffer over-read when parsing multipart HTTP responses. A malicious HTTP server can exploit this by sending a crafted multipart response, potentially causing the client application to crash or disclose sensitive heap memory.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
gnome libsoup -
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
redhat enterprise_linux 10.0

References & Advisories (2)

https://bugzilla.redhat.com/show_bug.cgi?id=2506949
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

EPSS — Exploitation Probability

0.25%
Raw Score 0.002460
Percentile 16.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00246
2026-11-12
0.00246
2026-11-10
0.00246
2026-11-09
0.00246
2026-11-08
0.00246
2026-11-07
0.00246
2026-11-06
0.00246
2026-11-05
0.00246

Intelligence Sources

mitre ref →
nvd ref →

External Links