CVE-2023-46846

CRITICALNVD 9.39.3—

9.3

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.

CVSS v3: 9.3
EG Score: 9.3(medium)
EPSS: 93.1%
KEV: Not listed

Published

November 3, 2023

Last Modified

December 18, 2024

References (28)

secalert@redhathttps://access.redhat.com/errata/RHSA-2023:6266
secalert@redhathttps://access.redhat.com/errata/RHSA-2023:6267
secalert@redhathttps://access.redhat.com/errata/RHSA-2023:6268
secalert@redhathttps://access.redhat.com/errata/RHSA-2023:6748
secalert@redhathttps://access.redhat.com/errata/RHSA-2023:6801
secalert@redhathttps://access.redhat.com/errata/RHSA-2023:6803
secalert@redhathttps://access.redhat.com/errata/RHSA-2023:6804
secalert@redhathttps://access.redhat.com/errata/RHSA-2023:6810
secalert@redhathttps://access.redhat.com/errata/RHSA-2023:7213
secalert@redhathttps://access.redhat.com/errata/RHSA-2024:11049
secalert@redhathttps://access.redhat.com/security/cve/CVE-2023-46846
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2245910
secalert@redhathttps://github.com/squid-cache/squid/security/advisories/GHSA-j83v-w3p4-5cqh
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2023:6266
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2023:6267

Patch Availability(11)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	squidclient (6.1-2ubuntu1.1) @ mantic	2026-05-24	ubuntu
redhat	squid-7:3.5.20-17.el7_9.13	2024-12-16	redhat
redhat	squid:4-8090020231030224841.a75119d5	2023-11-14	redhat
redhat	squid:4-8020020231101135052.4cda2c84	2023-11-08	redhat
redhat	squid:4-8010020231101141358.c27ad7f8	2023-11-08	redhat
redhat	squid:4-8040020231101101624.522a0ee4	2023-11-08	redhat
redhat	squid:4-8060020231031165747.ad008a3a	2023-11-08	redhat
redhat	squid-7:5.5-6.el9_3.1	2023-11-07	redhat
redhat	squid-7:5.5-5.el9_2.1	2023-11-02	redhat
redhat	squid-7:5.2-1.el9_0.3	2023-11-02	redhat
redhat	squid:4-8080020231030214932.63b34585	2023-11-02	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-444Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling)

All Vendor Advisories

(11)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 8× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 14:31 UTCEG score recompute
2026-05-24 14:31 UTCVendor advisory

Frequently asked(5)

What is CVE-2023-46846?

CVE-2023-46846 is a critical vulnerability published on November 3, 2023. 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.

When was CVE-2023-46846 disclosed?

CVE-2023-46846 was first published in the National Vulnerability Database on November 3, 2023, with the most recent update on December 18, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-46846 actively exploited?

CVE-2023-46846 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-46846?

CVE-2023-46846 has a CVSS v3 base score of 9.3 (NVD).

How do I remediate CVE-2023-46846?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-46846, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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