DEBIAN-CVE-2026-12549

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Source
https://security-tracker.debian.org/tracker/CVE-2026-12549
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12549.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-12549
Upstream
  • CVE-2026-12549
Published
2026-06-22T16:16:34Z
Modified
2026-09-14T17:01:47Z
Severity
  • 4.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
Summary
[none]
Details

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

Affected packages

Debian:14 / libsoup3

Package

Name
libsoup3
Purl
pkg:deb/debian/libsoup3?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.6.5-3
3.6.5-4
3.6.5-5
3.6.5-6
3.6.5-7
3.6.5-8
3.6.5-9
3.6.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-12549.json"