Detections
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Alpine: multiple varnish packages: security update to 6.6.1-r0

medium Tenable Cloud Security Plugin ID 424589

Description

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

 - Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large
 Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and
 Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8. (CVE-2021-36740)

See Also

https://security.alpinelinux.org/vuln/CVE-2021-36740

Plugin Details

Severity: Medium

ID: 424589

Version: Revision 1.9

Type: Local

Published: 4/4/2025

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 6.91

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2021-36740

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 7/14/2021

Reference Information

CVE: CVE-2021-36740