Detections
Analytics

SCA: security update for h11 (GHSA-vqfr-h8mv-ghfj)

critical Tenable Cloud Security Plugin ID 425762

Description

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

 - h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's parsing of line
 terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain
 conditions. This issue has been patched in version 0.16.0. Since exploitation requires the combination of
 buggy h11 with a buggy (reverse) proxy, fixing either component is sufficient to mitigate this issue.
 (CVE-2025-43859)

See Also

https://github.com/advisories/GHSA-vqfr-h8mv-ghfj

Plugin Details

Severity: Critical

ID: 425762

Version: Revision 1.9

Type: Local

Family: SCA Checks

Published: 4/24/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.45

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2025-43859

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/24/2025

Vulnerability Publication Date: 4/24/2025

Reference Information

CVE: CVE-2025-43859

cwe: CWE-444