DEBIAN-CVE-2026-46527

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Source
https://security-tracker.debian.org/tracker/CVE-2026-46527
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-46527.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-46527
Upstream
Published
2026-05-29T20:16:28Z
Modified
2026-09-14T17:03:15Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 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 the server has called Server::set_trusted_proxies() with a non-empty trusted-proxy list, an attacker can send an HTTP request that includes an X-Forwarded-For header whose value parses to no valid IP segments. The code path then executes get_client_ip(), which calls front() on an empty std::vector—undefined behavior in C++. On typical implementations this manifests as abnormal process termination (denial of service). With Sanitizers enabled, you get an explicit runtime diagnostic. 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-2026-46527.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-2026-46527.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-2026-46527.json"