CVE-2026-12548 | A heap out-of-bounds read flaw was found in libsoup. When pa… | CVSS 4.2 MEDIUM

Description

A heap out-of-bounds read flaw was found in libsoup. When parsing multipart HTTP messages, an integer type mismatch between the caller and soup_headers_parse() can cause the length parameter to be incorrectly truncated, leading to a heap buffer over-read. A remote attacker could use this flaw to crash an application using libsoup or potentially disclose heap memory contents.

Metadata

CVE ID: CVE-2026-12548
State: PUBLISHED
Assigner: redhat
Reserved: 2026-06-17 18:25 UTC
Published: 2026-07-21 18:40 UTC
Last updated: 2026-07-21 19:01 UTC
Primary CWE: CWE-125
Out-of-bounds Read
Vendor / Product: Red Hat / Red Hat Enterprise Linux 10
Sources: cve.org · NVD

Severity & Metrics

4.2 MEDIUM CVSS 3.1

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

Affected products (1)

Vendor	Product	Platform	Versions
Red Hat	Red Hat Enterprise Linux 10	—	—

Weakness (CWE)

CWE	Source	Description
CWE-125	cna	Out-of-bounds Read

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.2	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L

References (3)