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No exploitation reportedFix available

CVE-2024-45802

No exploitation reported by the sources we read.

  • Published2024-10-28
  • Fixed in6.10
  • WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Squid is an open source caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to Input Validation, Premature Release of Resource During Expected Lifetime, and Missing Release of Resource after Effective Lifetime bugs, Squid is vulnerable to Denial of Service attacks by a trusted server against all clients using the proxy. This bug is fixed in the default build configuration of Squid version 6.10.

Timeline

dates in UTC
  1. 2024-10-2815:15CVE publishedNVD
  2. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Versions per branch

NVD · CISA-ADP
Squid-cache squid
BranchAffectedFixed in
6.10≥ 3.0, < 6.106.10

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • squid-cache squid
    Affected
    • = >= 3.0, < 6.10no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2024-10-28

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libecapRocky Linux:8all versions · fixed in 0:1.0.1-2.module+el8.9.0+1437+df5ea8f0
  • libecapRed Hat:rhel_tus:8.6::appstreamall versions · fixed in 0:1.0.1-2.module+el8.1.0+4044+36416a77and 3 other packages
  • libecapRed Hat:rhel_tus:8.4::appstreamall versions · fixed in 0:1.0.1-2.module+el8.1.0+4044+36416a77and 3 other packages
  • libecapRed Hat:rhel_eus:8.8::appstreamall versions · fixed in 0:1.0.1-2.module+el8.1.0+4044+36416a77and 3 other packages
  • libecapRed Hat:rhel_e4s:8.6::appstreamall versions · fixed in 0:1.0.1-2.module+el8.1.0+4044+36416a77and 3 other packages
  • libecapRed Hat:rhel_e4s:8.4::appstreamall versions · fixed in 0:1.0.1-2.module+el8.1.0+4044+36416a77and 3 other packages
  • libecapRed Hat:rhel_aus:8.6::appstreamall versions · fixed in 0:1.0.1-2.module+el8.1.0+4044+36416a77and 3 other packages
  • libecapRed Hat:rhel_aus:8.4::appstreamall versions · fixed in 0:1.0.1-2.module+el8.1.0+4044+36416a77and 3 other packages

49 more package ranges on OSV.dev

Vendor advisories

  • CVE-2024-45802 Red Hat Product Security224 products fixed · 4 known affected

    squid: Squid: Denial of Service via crafted ESI response content

    squid as a component of Red Hat Enterprise Linux 6 · squid.src as a component of Red Hat Enterprise Linux 6 · squid34 as a component of Red Hat Enterprise Linux 6 · +1 more

  • RHSA-2024:9813 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: squid:4 security update

  • RHSA-2024:9815 Red Hat Product Security34 products fixed

    Red Hat Security Advisory: squid:4 security update

  • RHSA-2024:9814 Red Hat Product Security48 products fixed

    Red Hat Security Advisory: squid:4 security update

  • RHSA-2024:9738 Red Hat Product Security21 products fixed

    Red Hat Security Advisory: squid security update

  • RHSA-2024:9729 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: squid security update

5 more advisories

Full record on NVD

Fix

  1. Update Squid-cache squid to 6.10
  2. Vendor fix Red Hat Product Security RHSA-2024:9813 · 30 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  3. Workaround from the vendor Red Hat Product Security RHSA-2024:9813 · 30 productsMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2024-10-28
  • CNACVSS 3.17.5known since 2026-10-23
  • NVDCVSS 3.17.5read 2026-10-23
  • CNAweakness (CWE)CWE-20known since 2026-10-23
  • FIRST EPSSEPSS score47.9 %read 2026-11-10
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2024-10-28
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2024-45802?

Squid is an open source caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to Input Validation, Premature Release of Resource During Expected Lifetime, and Missing Release of Resource after Effective Lifetime bugs, Squid is vulnerable to Denial of Service attacks by a trusted server against all clients using the proxy. This bug is fixed in the default build configuration of Squid version 6.10.

Is CVE-2024-45802 actively exploited?

Active exploitation of CVE-2024-45802 has not been confirmed. Its EPSS score was 47.9% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-45802?

CVE-2024-45802 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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