Information Exposure Affecting cpp-httplib package, versions <0.41.0+ds-3


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.26% (18th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-CPPHTTPLIB-15805186
  • published29 Mar 2026
  • disclosed27 Mar 2026

Introduced: 27 Mar 2026

CVE-2026-33745  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Debian:unstable cpp-httplib to version 0.41.0+ds-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cpp-httplib package and not the cpp-httplib package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.39.0, the cpp-httplib HTTP client forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary hosts when following cross-origin HTTP redirects (301/302/307/308). A malicious or compromised server can redirect the client to an attacker-controlled host, which then receives the plaintext credentials in the Authorization header. Version 0.39.0 fixes the issue.

CVSS Base Scores

version 3.1