CVE-2023-46846 Squid: request/response smuggling in http/1.1 and icap

What is CVE-2023-46846?

CVE-2023-46846 is a critical vulnerability in Redhat Enterprise Linux, published on 3 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

SQUID is vulnerable to HTTP request smuggling, caused by chunked decoder lenience, allows a remote attacker to perform Request/Response smuggling past firewall and frontend security systems.

Weakness: CWE-444

Which versions are affected by CVE-2023-46846?

It affects 8 products.

Products include Redhat Enterprise Linux, Redhat Enterprise Linux Eus, Redhat Enterprise Linux for Arm 64, Redhat Enterprise Linux for Ibm Z Systems, Redhat Enterprise Linux for Power Little Endian, Redhat Enterprise Linux Server Aus and 2 more.

How do I fix CVE-2023-46846?

Apply the vendor's patch.

Is CVE-2023-46846 being exploited?

There is no known exploitation of CVE-2023-46846 in the wild and no public exploit code.

Other vulnerabilities in Redhat Enterprise Linux

• CVE-2018-14667 Red Hat JBoss RichFaces Framework Expression Language Injection Exploited Critical 9.8
• CVE-2021-20325 Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit Critical 9.8
• CVE-2018-25011 Memory corruption in libwebp Critical 9.8
• CVE-2018-25014 Other in libwebp Critical 9.8
• CVE-2014-3585 Supply chain in redhat-upgrade-tool Critical 9.8

All Redhat Enterprise Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2023-46846, AZL-110522, AZL-31905, CLSA-2025-1756751473, CLSA-2025-1756751597, CLSA-2026-1768416342 and 5 more.