DEBIAN-CVE-2026-45372

Source
https://security-tracker.debian.org/tracker/CVE-2026-45372
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45372.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-45372
Upstream
Published
2026-05-29T20:16:26Z
Modified
2026-09-14T17:03:42Z
Severity
  • 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L CVSS Calculator
Summary
[none]
Details

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, when cpp-httplib's server parses an incoming request, it applies percent-decoding to every header value except Location and Referer. The validity check (is_field_value) is run before decoding, so encoded %0D%0A passes the check and is then expanded to a literal \r\n byte pair inside the stored header value. This vulnerability is fixed in 0.44.0.

References

Affected packages

Debian:12 / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/debian/cpp-httplib?arch=source&distro=bookworm

Affected ranges

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

Affected versions

0.*
0.11.4+ds-1
0.11.4+ds-1+deb12u1
0.11.4+ds-2
0.11.4+ds-3
0.13.1+ds-1
0.14.0+ds-1
0.14.1+ds-1
0.14.1+ds-2
0.14.2+ds-1
0.14.3+ds-1
0.14.3+ds-1.1~exp1
0.14.3+ds-1.1
0.15.3+ds-1
0.15.3+ds-2
0.15.3+ds-3
0.16.0+ds-1
0.16.3+ds-1
0.16.3+ds-2
0.18.0+ds-1
0.18.7-1
0.20.1+ds-3
0.25.0+ds-1
0.26.0+ds-2
0.41.0+ds-1
0.41.0+ds-2
0.41.0+ds-3~bpo13+1
0.41.0+ds-3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45372.json"

Debian:13 / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/debian/cpp-httplib?arch=source&distro=trixie

Affected ranges

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

Affected versions

0.*
0.18.7-1
0.18.7-1+deb13u1
0.20.1+ds-3
0.25.0+ds-1
0.26.0+ds-2
0.41.0+ds-1
0.41.0+ds-2
0.41.0+ds-3~bpo13+1
0.41.0+ds-3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45372.json"

Debian:14 / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/debian/cpp-httplib?arch=source&distro=forky

Affected ranges

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

Affected versions

0.*
0.18.7-1
0.20.1+ds-3
0.25.0+ds-1
0.26.0+ds-2
0.41.0+ds-1
0.41.0+ds-2
0.41.0+ds-3~bpo13+1
0.41.0+ds-3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45372.json"