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.
References
| Link | Resource |
|---|---|
| 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 |
Configurations
Configuration 1 (hide)
|
Configuration 2 (hide)
|
History
08 Jul 2026, 15:10
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Gnome libsoup
Gnome Redhat enterprise Linux Redhat |
|
| CPE | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:a:gnome:libsoup:-:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* |
|
| References | () https://access.redhat.com/security/cve/CVE-2026-12549 - Vendor Advisory, Mitigation | |
| References | () https://access.redhat.com/security/cve/cve-2026-0716 - Vendor Advisory, Mitigation | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2489999 - Issue Tracking, Vendor Advisory | |
| References | () https://gitlab.gnome.org/GNOME/libsoup/-/work_items/516 - Exploit, Issue Tracking, Patch, Vendor Advisory |
22 Jun 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-22 16:16
Updated : 2026-07-08 15:10
NVD link : CVE-2026-12549
Mitre link : CVE-2026-12549
CVE.ORG link : CVE-2026-12549
JSON object : View
Products Affected
gnome
- libsoup
redhat
- enterprise_linux
CWE
CWE-805
Buffer Access with Incorrect Length Value
