CVEvulnerability
CVE-2026-12549
4.8 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-06-22
- Last modified
- 2026-07-08
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
- Weaknesses
- CWE-805
Description
The fix for CVE-2026-2443 was regressed by a subsequent rework commit that replaced specific overflow checks with a general signed comparison. When a client sends a Range request with a suffix length exceeding the content size, the resulting negative start value is not properly clamped, leading to malformed HTTP 206 responses and log flooding.
Affected configurations
• 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
• gnome libsoup
Related
Weakness · CWE (1)
- CWE-805 Buffer Access with Incorrect Length Value weakness
References
- https://access.redhat.com/security/cve/CVE-2026-12549 Vendor Advisory, Mitigation
- https://access.redhat.com/security/cve/cve-2026-0716 Vendor Advisory, Mitigation
- https://bugzilla.redhat.com/show_bug.cgi?id=2489999 Issue Tracking, Vendor Advisory
- https://gitlab.gnome.org/GNOME/libsoup/-/work_items/516 Exploit, Issue Tracking, Patch, Vendor Advisory