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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-12549 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://access.redhat.com/security/cve/CVE-2026-12549 Red Hat, Inc.
https://access.redhat.com/security/cve/cve-2026-0716 Red Hat, Inc.
https://bugzilla.redhat.com/show_bug.cgi?id=2489999 Red Hat, Inc.
https://gitlab.gnome.org/GNOME/libsoup/-/work_items/516 Red Hat, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-805 Buffer Access with Incorrect Length Value Red Hat, Inc.  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-12549
NVD Published Date:
06/22/2026
NVD Last Modified:
06/23/2026
Source:
Red Hat, Inc.