CVE-2026-12548 — MEDIUM (4.2)

Vulnerability 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.

CVSS Score

4.2

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

LOW

Related Weaknesses (CWE)

CWE-125

References

FAQ

What is CVE-2026-12548?

CVE-2026-12548 is a vulnerability with a CVSS score of 4.2 (MEDIUM). 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 inc...

How severe is CVE-2026-12548?

CVE-2026-12548 has been rated MEDIUM with a CVSS base score of 4.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-12548?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.