CVE-2026-15714

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 73/100
Published: 2026-07-14 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

An out-of-bounds read vulnerability was found in libsoup's multipart processing subsystem. The flaw exists in the soup_multipart_input_stream_read_headers() function inside soup-multipart-input-stream.c, which does not adequately restrict or validate the size of incoming multipart boundary strings. When processing a crafted HTTP response containing a malformed or oversized boundary parameter, the internal stream reader reads past the allocated buffer bounds. A remote, unauthenticated attacker can exploit this behavior to cause a service denial (DoS) through application failure or potentially read fragments of unauthorized memory metadata.

Weakness Classification (1)

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

0.39%
Raw Score 0.003900
Percentile 33.7%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00390
2026-11-13
0.00390
2026-11-12
0.00390
2026-11-10
0.00390
2026-11-09
0.00390
2026-11-08
0.00390
2026-11-07
0.00390
2026-11-06
0.00390
2026-11-05
0.00390

Intelligence Sources

mitre ref →
nvd ref →