Dashboard / CVE-2026-54919

CVE-2026-54919

HIGH
MEDIUM Priority: 0.02 BB Relevance: 65/100
Published: 2026-07-10 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: High
I: High
A: None

Description

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. In affected Mbed TLS backend versions from 0.31.0 through 0.46.1 and wolfSSL backend versions from 0.33.0 through 0.46.1, when cpp-httplib is built with CPPHTTPLIB_MBEDTLS_SUPPORT or CPPHTTPLIB_WOLFSSL_SUPPORT and a client connects to an IP-literal host with server certificate verification enabled, SSLClient and Client in HTTPS mode skip certificate chain validation and WebSocketClient on the Mbed TLS backend skips verification altogether, allowing a man-in-the-middle attacker positioned to intercept traffic to present a crafted certificate and read or modify the traffic. This issue is fixed in version 0.47.0.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
yhirose cpp-httplib 0.31.0 – 0.47.0

References & Advisories (3)

Bug Bounty Relevance

65 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

7.4 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploitation Probability

0.26%
Raw Score 0.002640
Percentile 18.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00264
2026-10-28
0.00264

Intelligence Sources

nvd ref →

External Links