DEBIAN-CVE-2026-124040

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Source
https://security-tracker.debian.org/tracker/CVE-2026-124040
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-124040.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-124040
Upstream
Published
2026-11-06T20:17:22Z
Modified
2026-11-07T19:00:40Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

CivetWeb through 1.16, when built with USE_HTTP2 and enable_http2 on, contains a use-after-free vulnerability in handle_http2() that retains freed :method and :path pointers. Unauthenticated remote attackers can send a later HEADERS frame omitting these pseudo-headers to influence request method or path seen by access rules, or crash the server.

References

Affected packages

Debian:12 / civetweb

Package

Name
civetweb
Purl
pkg:deb/debian/civetweb?arch=source&distro=bookworm

Affected ranges

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

Affected versions

1.*
1.15+dfsg-4
1.16+dfsg-1
1.16+dfsg-2
1.16+dfsg-3
1.16+dfsg-4
1.16+dfsg-5
1.16+dfsg-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-124040.json"

Debian:13 / civetweb

Package

Name
civetweb
Purl
pkg:deb/debian/civetweb?arch=source&distro=trixie

Affected ranges

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

Affected versions

1.*
1.16+dfsg-2
1.16+dfsg-2+deb13u1
1.16+dfsg-3
1.16+dfsg-4
1.16+dfsg-5
1.16+dfsg-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-124040.json"

Debian:14 / civetweb

Package

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

Affected ranges

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

Affected versions

1.*
1.16+dfsg-2
1.16+dfsg-3
1.16+dfsg-4
1.16+dfsg-5
1.16+dfsg-6

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-124040.json"