Detections
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SCA: security update for aiohttp (GHSA-63hf-3vf5-4wqf)

medium Tenable Self-Hosted Container Security Plugin ID 439631

Description

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

 - AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4,
 the C parser (the default for most installs) accepted null bytes and control characters in response
 headers. This issue has been patched in version 3.13.4. (CVE-2026-34520)

Solution

Update the aiohttp library and its related packages to version 3.13.4 or later.

See Also

https://github.com/advisories/GHSA-63hf-3vf5-4wqf

Plugin Details

Severity: Medium

ID: 439631

Version: Revision 1.13

Type: Local

Family: SCA Checks

Published: 4/2/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.64

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-34520

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:N/I:H/A:H

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

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 2.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/1/2026

Vulnerability Publication Date: 4/1/2026

Reference Information

CVE: CVE-2026-34520

cwe: CWE-113