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Echo: cpp-httplib: security update to 0.18.7-1+e2

critical Tenable Self-Hosted Container Security Plugin ID 461631

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a
 vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and
 authorization decisions. An attacker can inject headers named REMOTE_ADDR, REMOTE_PORT, LOCAL_ADDR,
 LOCAL_PORT that are parsed into the request header multimap via read_headers() in httplib.h
 (headers.emplace), then the server later appends its own internal metadata using the same header names in
 Server::process_request without erasing duplicates. Because Request::get_header_value returns the first
 entry for a header key (id == 0) and the client-supplied headers are parsed before server-inserted
 headers, downstream code that uses these header names may inadvertently use attacker-controlled values.
 Affected files/locations: cpp-httplib/httplib.h (read_headers, Server::process_request,
 Request::get_header_value, get_header_value_u64) and cpp-httplib/docker/main.cc (get_client_ip,
 nginx_access_logger, nginx_error_logger). Attack surface: attacker-controlled HTTP headers in incoming
 requests flow into the Request.headers multimap and into logging code that reads forwarded headers,
 enabling IP spoofing, log poisoning, and authorization bypass via header shadowing. This vulnerability is
 fixed in 0.27.0. (CVE-2025-66570)

Solution

Update the cpp-httplib library and its related packages to version 0.18.7-1+e2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-66570

Plugin Details

Severity: Critical

ID: 461631

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.88

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2025-66570

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/7/2025

Vulnerability Publication Date: 12/5/2025

Reference Information

CVE: CVE-2025-66570