Improper Enforcement of Behavioral Workflow Affecting squid:4/libecap-devel package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
4.68% (92nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-RHEL8-SQUID-21021565
  • published16 Oct 2026
  • disclosed12 Sept 2026

Introduced: 12 Sep 2026

CVE-2026-61642  (opens in a new tab)
CWE-841  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 squid:4/libecap-devel.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid:4/libecap-devel package and not the squid:4/libecap-devel package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Squid is a caching proxy for the Web. From 3.3.0.1 to before 7.6, due to an improper enforcement of behavioral workflow bug, Squid is vulnerable to a Request Smuggling attack against HTTP/1.1 Transfer-Encoding. HTTP header parsing (src/HttpHeader.cc) accepted the bare Transfer-Encoding: identity form, which the HTTP specification prohibits because any transfer coding must be wrapped within chunked encoding. This problem allows a trusted client to perform an HTTP Request Smuggling attack when HTTP/1.1 is used, bypassing security mechanisms that may be in place between attacker and Squid. When there is an HTTP cache operating prior to the affected Squid, this Request Smuggling attack also allows the attacker to poison that web cache and store arbitrary malicious content at any URL for delivery to other clients' future requests. This issue is fixed in version 7.6.

CVSS Base Scores

version 3.1