CVE-2023-46847

CRITICALNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because EPSS predicts 88% probability of exploitation within the next 30 days (top 0.2% of all CVEs). NVD baseline CVSS 7.5 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Elevated
9.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 88%
CISA-KEV: Not listedEPSS PROB: 88%CVSS: 7.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.

CVSS v3
7.5
EG Score
9.0(high)
EG Risk
80(Track)
EG Risk 80/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation88% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
88%
EPSS %ILE
100%
KEV
Not listed

Published

November 3, 2023

Last Modified

August 7, 2026

Advisory Details (10)

Auto-updated Aug 7, 2026
Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 6 Extended Lifecycle Support.

https://access.redhat.com/errata/RHSA-2023:6882
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2023:6810
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2023:6805
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update

https://access.redhat.com/errata/RHSA-2023:6804
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red

https://access.redhat.com/errata/RHSA-2023:6803
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.6 Extended Update Support.

https://access.redhat.com/errata/RHSA-2023:6801
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2023:6748
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2023:6268
redhat Patch Available

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2023:6267
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2023:6266

Patch Availability(16)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntusquidclient (6.1-2ubuntu1.1) @ mantic2026-05-24ubuntu
ubuntusquid3 (3.5.12-1ubuntu7.16+esm2) @ xenial2026-05-24ubuntu
redhatsquid-7:3.5.20-12.el7_6.22023-11-29redhat
redhatsquid-7:3.5.20-13.el7_7.12023-11-29redhat
redhatsquid:4-8090020231030224841.a75119d52023-11-14redhat
redhatsquid-7:3.1.23-24.el6_10.12023-11-13redhat
redhatsquid34-7:3.4.14-15.el6_10.12023-11-13redhat
redhatsquid:4-8010020231101141358.c27ad7f82023-11-08redhat
redhatsquid:4-8020020231101135052.4cda2c842023-11-08redhat
redhatsquid-7:3.5.20-17.el7_9.92023-11-08redhat
redhatsquid:4-8040020231101101624.522a0ee42023-11-08redhat
redhatsquid:4-8060020231031165747.ad008a3a2023-11-08redhat
redhatsquid-7:5.5-6.el9_3.12023-11-07redhat
redhatsquid-7:5.5-5.el9_2.12023-11-02redhat
redhatsquid:4-8080020231030214932.63b345852023-11-02redhat
redhatsquid-7:5.2-1.el9_0.32023-11-02redhat

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.

Affected Packages

(11 across 11 ecosystems)
Alpine:v3.19(1)
PackageVulnerable rangeFixed inDependents
squid—6.4-r0—
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
squid—6.4-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
squid—6.4-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
squid—6.4-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
squid—6.4-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
squid—6.4-r0—
Debian:10(1)
PackageVulnerable rangeFixed inDependents
squid4.6-1 ... 4.6-1+deb10u8 (9 versions)4.6-1+deb10u9—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
squid4.13-10, 4.13-10+deb11u1, 4.13-10+deb11u24.13-10+deb11u3—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
squid5.7-25.7-2+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
squid—6.5-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
squid—6.5-1—

Weakness Classification(1)

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

All Vendor Advisories

(17)

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 5× in last 7d / 18× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-24 14:01 UTCEPSS rescore
  2. 2026-09-24 14:01 UTCEPSS rescore
  3. 2026-09-22 14:46 UTCEPSS rescore
  4. 2026-09-21 20:31 UTCEPSS rescore
  5. 2026-09-18 19:26 UTCEPSS rescore
  6. 2026-09-16 14:06 UTCEPSS rescore
  7. 2026-09-16 05:11 UTCEPSS rescore
  8. 2026-09-12 14:58 UTCEPSS rescore
  9. 2026-09-09 18:53 UTCOSV refresh
  10. 2026-09-06 13:46 UTCEPSS rescore
  11. 2026-09-06 13:45 UTCEPSS rescore
  12. 2026-09-05 15:26 UTCEPSS rescore
  13. 2026-09-01 13:51 UTCEPSS rescore
  14. 2026-08-30 19:15 UTCEPSS rescore
  15. 2026-08-30 01:20 UTCEPSS rescore
  16. 2026-08-28 21:39 UTCEPSS rescore
  17. 2026-08-27 14:23 UTCEPSS rescore
  18. 2026-08-26 14:44 UTCEPSS rescore
  19. 2026-08-25 13:46 UTCEPSS rescore
  20. 2026-08-24 14:14 UTCEPSS rescore
  21. 2026-08-23 00:17 UTCEPSS rescore
  22. 2026-08-22 23:07 UTCOSV refresh
  23. 2026-08-20 22:53 UTCEPSS rescore
  24. 2026-08-16 02:12 UTCEPSS rescore
  25. 2026-08-12 13:49 UTCEPSS rescore
Show 72 more
  1. 2026-08-07 02:18 UTCVendor advisory
  2. 2026-08-07 01:29 UTCEG score recompute
  3. 2026-08-07 01:29 UTCVendor advisory
  4. 2026-08-05 19:15 UTCEPSS rescore
  5. 2026-08-04 15:07 UTCEPSS rescore
  6. 2026-08-03 10:34 UTCEPSS rescore
  7. 2026-08-03 10:34 UTCEPSS rescore
  8. 2026-07-24 14:16 UTCEPSS rescore
  9. 2026-07-24 14:16 UTCEPSS rescore
  10. 2026-07-23 02:27 UTCEG score recompute
  11. 2026-07-22 21:20 UTCEG score recompute▲ 0.40
  12. 2026-07-22 21:20 UTCVendor advisory
  13. 2026-07-22 14:06 UTCEPSS rescore
  14. 2026-07-20 17:06 UTCEPSS rescore
  15. 2026-07-18 10:03 UTCEPSS rescore
  16. 2026-07-18 10:03 UTCEPSS rescore
  17. 2026-07-15 16:56 UTCEPSS rescore
  18. 2026-07-15 16:56 UTCEPSS rescore
  19. 2026-07-15 04:49 UTCOSV refresh
  20. 2026-07-12 05:45 UTCEPSS rescore
  21. 2026-07-09 19:08 UTCEPSS rescore
  22. 2026-07-08 15:13 UTCEPSS rescore
  23. 2026-07-07 13:44 UTCEPSS rescore
  24. 2026-07-07 13:44 UTCEPSS rescore
  25. 2026-07-01 15:05 UTCEPSS rescore
  26. 2026-06-27 05:23 UTCOSV refresh
  27. 2026-06-27 03:07 UTCEPSS rescore
  28. 2026-06-24 14:04 UTCEPSS rescore
  29. 2026-06-24 14:04 UTCEPSS rescore
  30. 2026-06-24 06:28 UTCNVD updateCVSS v3 → 7.5
  31. 2026-06-23 21:31 UTCEPSS rescore
  32. 2026-06-23 21:31 UTCEPSS rescore
  33. 2026-06-21 01:58 UTCEPSS rescore
  34. 2026-06-21 01:58 UTCEPSS rescore
  35. 2026-06-18 17:51 UTCEPSS rescore
  36. 2026-06-17 17:51 UTCEPSS rescore
  37. 2026-06-15 17:47 UTCEPSS rescore
  38. 2026-06-14 23:16 UTCEPSS rescore
  39. 2026-06-13 22:59 UTCEPSS rescore
  40. 2026-06-13 22:59 UTCEPSS rescore
  41. 2026-06-12 23:11 UTCEPSS rescore
  42. 2026-06-12 23:10 UTCEPSS rescore
  43. 2026-06-11 13:59 UTCEPSS rescore
  44. 2026-06-10 22:17 UTCEPSS rescore
  45. 2026-06-10 13:21 UTCEPSS rescore
  46. 2026-06-09 16:17 UTCOSV refresh
  47. 2026-06-07 15:24 UTCEPSS rescore
  48. 2026-06-07 15:23 UTCEPSS rescore
  49. 2026-06-06 13:46 UTCEPSS rescore
  50. 2026-06-06 13:46 UTCEPSS rescore
  51. 2026-06-05 22:46 UTCEPSS rescore
  52. 2026-06-05 22:46 UTCEPSS rescore
  53. 2026-06-05 06:09 UTCEPSS rescore
  54. 2026-06-05 06:09 UTCEPSS rescore
  55. 2026-06-05 06:09 UTCEPSS rescore
  56. 2026-06-04 13:11 UTCEPSS rescore
  57. 2026-06-04 13:11 UTCEPSS rescore
  58. 2026-06-04 13:11 UTCEPSS rescore
  59. 2026-06-02 20:12 UTCEPSS rescore
  60. 2026-06-02 20:12 UTCEPSS rescore
  61. 2026-05-31 22:30 UTCEPSS rescore
  62. 2026-05-31 22:30 UTCEPSS rescore
  63. 2026-05-31 00:15 UTCEPSS rescore
  64. 2026-05-31 00:15 UTCEPSS rescore
  65. 2026-05-29 13:43 UTCEPSS rescore
  66. 2026-05-28 13:44 UTCEPSS rescore
  67. 2026-05-27 13:39 UTCEPSS rescore
  68. 2026-05-27 13:39 UTCEPSS rescore
  69. 2026-05-26 13:43 UTCEPSS rescore
  70. 2026-05-26 13:43 UTCEPSS rescore
  71. 2026-05-24 14:31 UTCEG score recompute
  72. 2026-05-24 14:31 UTCVendor advisory

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-46847?
CVE-2023-46847 is a critical vulnerability published on November 3, 2023. Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.
When was CVE-2023-46847 disclosed?
CVE-2023-46847 was first published in the National Vulnerability Database on November 3, 2023, with the most recent update on August 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-46847 actively exploited?
CVE-2023-46847 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88% probability of exploitation in the next 30 days, which ranks it in the top 0.2% of all scored CVEs.
What is the CVSS score of CVE-2023-46847?
CVE-2023-46847 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
How do I remediate CVE-2023-46847?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-46847, 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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