CVE-2026-12548
Last modified
CVE-2026-12548 is a medium-severity vulnerability rated 4.2/10 on the CVSS scale. 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. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnome | Libsoup | All versions |
| Redhat | Enterprise Linux | 10.0 |
References
- https://access.redhat.com/security/cve/CVE-2026-12548Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2489996Exploit, Issue Tracking, Vendor Advisory
- https://gitlab.gnome.org/GNOME/libsoup/-/work_items/512Exploit, Mitigation, Vendor Advisory
- https://gitlab.gnome.org/GNOME/libsoup/-/work_items/512Exploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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