DEBIAN-CVE-2025-46728

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Source
https://security-tracker.debian.org/tracker/CVE-2025-46728
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-46728.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-46728
Upstream
Published
2025-05-06T01:15:50Z
Modified
2025-10-14T04:26:55.058512Z
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++ header-only HTTP/HTTPS server and client library. Prior to version 0.20.1, the library fails to enforce configured size limits on incoming request bodies when Transfer-Encoding: chunked is used or when no Content-Length header is provided. A remote attacker can send a chunked request without the terminating zero-length chunk, causing uncontrolled memory allocation on the server. This leads to potential exhaustion of system memory and results in a server crash or unresponsiveness. Version 0.20.1 fixes the issue by enforcing limits during parsing. If the limit is exceeded at any point during reading, the connection is terminated immediately. A short-term workaround through a Reverse Proxy is available. If updating the library immediately is not feasible, deploy a reverse proxy (e.g., Nginx, HAProxy) in front of the cpp-httplib application. Configure the proxy to enforce maximum request body size limits, thereby stopping excessively large requests before they reach the vulnerable library code.

References

Affected packages

Debian:12 / cpp-httplib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown 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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / cpp-httplib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown 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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / cpp-httplib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown 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

Ecosystem specific 

{
    "urgency": "not yet assigned"
}