VulnerabilityAnalyzed
CVE-2026-12549
The fix for CVE-2026-2443 was regressed by a subsequent rework commit that replaced specific overflow checks with a general signed comparison.
MEDIUM 4.8EPSS 0.41%
Does this matter?
Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.8 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
- EPSS
- 0.41% probability · 35th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-805
- Affected
- redhat/enterprise linux · gnome/libsoup
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2026-12549Vendor Advisory, Mitigation
- https://access.redhat.com/security/cve/cve-2026-0716Vendor Advisory, Mitigation
- https://bugzilla.redhat.com/show_bug.cgi?id=2489999Issue Tracking, Vendor Advisory
- https://gitlab.gnome.org/GNOME/libsoup/-/work_items/516Exploit, Issue Tracking, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.