CVE-2026-32748

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 8.9%, top 5% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 10.0%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Squid is a caching proxy for the Web. Prior to version 7.5, due to premature release of resource during expected lifetime and heap Use-After-Free bugs, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable Denial of Service attack against the Squid service using ICP protocol. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero icp_port). This problem _cannot_ be mitigated by denying ICP queries using icp_access rules. This bug is fixed in Squid version 7.5.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
52
EG Risk 52/100

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
Severity75% × 45%
Exploitation9% × 40%
Automatability100% × 15%
EPSS PROB
10.0%
EPSS %ILE
95th
KEV
Not listed

Published

March 26, 2026

Last Modified

July 15, 2026

Advisory Details (10)

Auto-updated Jul 6, 2026
Patch available. Sources: github_commit, github, redhat.
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Serv

https://access.redhat.com/errata/RHSA-2026:20580
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP So

https://access.redhat.com/errata/RHSA-2026:20565
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support

https://access.redhat.com/errata/RHSA-2026:20564
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 10.0 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:11901
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:10257
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

https://access.redhat.com/errata/RHSA-2026:10256
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.4 Extended Update Support.

https://access.redhat.com/errata/RHSA-2026:10255
genericMentions a patch (unverified)

oss-security - [ADVISORY] SQUID-2026:2 Denial of Service in ICP Request handling (CVE-2026-32748)

http://www.openwall.com/lists/oss-security/2026/03/25/3
githubMentions a patch (unverified)

SQUID-2026:2 Denial of Service in ICP Request handling · Advisory · squid-cache/squid · GitHub

https://github.com/squid-cache/squid/security/advisories/GHSA-f9p7-3jqg-hhvq
github_commit

commit 703e07d25ca6 (squid-cache/squid)

Fix landed in squid-cache/squid commit 703e07d25ca6 — awaiting tagged release

https://github.com/squid-cache/squid/commit/703e07d25ca6fa11f52d20bf0bb879e22ab7481b

Vendor Advisories for CVE-2026-32748(13)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(13)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntusquidclient (6.14-0ubuntu0.25.10.2) @ questing2026-06-30ubuntu
redhatsquid:4-8060020260518090356.ad008a3a2026-05-26redhat
redhatsquid:4-8080020260514105733.63b345852026-05-26redhat
redhatsquid:4-8040020260514123440.522a0ee42026-05-26redhat
redhatsquid-7:6.10-5.el10_0.22026-04-29redhat
redhatsquid-7:5.5-13.el9_4.52026-04-24redhat
redhatsquid-7:5.5-5.el9_2.112026-04-23redhat
redhatsquid-7:5.2-1.el9_0.102026-04-23redhat
redhatsquid-7:5.5-19.el9_6.32026-04-21redhat
redhatsquid-7:3.5.20-17.el7_9.162026-04-20redhat
redhatsquid:4-8100020260408092701.489197e62026-04-15redhat
redhatsquid-7:6.10-6.el10_1.32026-04-14redhat
redhatsquid-7:5.5-22.el9_7.42026-03-31redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
squid4.13-10 ... 7.6-2 (33 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
squid5.7-2 ... 7.7-1 (26 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
squid6.13-2, 6.13-2+deb13u1, 6.13-2+deb13u2
  • every version up to 6.13-2+deb13u3: fixed in 6.13-2+deb13u3
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
squid6.13-2, 7.1-1, 7.2-1, 7.2-2, 7.4-1
  • every version up to 7.5-1: fixed in 7.5-1
—

Weakness Classification(3)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 21× 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.

Showing the most recent 100 of 131 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:47 UTCEPSS rescore
  4. 2026-10-06 15:17 UTCEPSS rescore
  5. 2026-10-05 17:42 UTCEPSS rescore
  6. 2026-10-03 14:25 UTCEPSS rescore
  7. 2026-10-01 19:49 UTCEPSS rescore
  8. 2026-09-30 15:03 UTCEPSS rescore
  9. 2026-09-28 13:51 UTCEPSS rescore
  10. 2026-09-27 13:48 UTCEPSS rescore
  11. 2026-09-26 15:58 UTCEPSS rescore
  12. 2026-09-26 00:26 UTCEPSS rescore
  13. 2026-09-21 17:49 UTCOSV refresh
  14. 2026-09-20 20:15 UTCEPSS rescore
  15. 2026-09-18 19:28 UTCEPSS rescore
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-17 19:30 UTCEPSS rescore
  18. 2026-09-16 14:08 UTCEPSS rescore
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-12 15:01 UTCEPSS rescore
  21. 2026-09-11 14:52 UTCEPSS rescore
  22. 2026-09-10 09:34 UTCEPSS rescore
  23. 2026-09-08 22:00 UTCEPSS rescore
  24. 2026-09-07 16:01 UTCEPSS rescore
  25. 2026-09-06 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-09-06 13:47 UTCEPSS rescore
  2. 2026-09-04 05:06 UTCEPSS rescore
  3. 2026-09-02 14:11 UTCEPSS rescore
  4. 2026-09-02 14:01 UTCOSV refresh
  5. 2026-09-01 13:53 UTCEPSS rescore
  6. 2026-09-01 04:39 UTCEPSS rescore
  7. 2026-09-01 04:39 UTCEPSS rescore
  8. 2026-08-30 19:17 UTCEPSS rescore
  9. 2026-08-30 01:22 UTCEPSS rescore
  10. 2026-08-28 21:41 UTCEPSS rescore
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-26 14:46 UTCEPSS rescore
  13. 2026-08-25 13:49 UTCEPSS rescore
  14. 2026-08-24 14:17 UTCEPSS rescore
  15. 2026-08-23 00:19 UTCEPSS rescore
  16. 2026-08-21 23:49 UTCEPSS rescore
  17. 2026-08-20 22:55 UTCEPSS rescore
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-19 17:03 UTCEPSS rescore
  20. 2026-08-18 13:48 UTCEPSS rescore
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 10:12 UTCEG score recompute
  23. 2026-08-16 10:12 UTCVendor advisory
  24. 2026-08-16 02:14 UTCEPSS rescore
  25. 2026-08-15 01:30 UTCEPSS rescore
  26. 2026-08-14 19:35 UTCVendor advisory
  27. 2026-08-14 06:30 UTCEG score recompute
  28. 2026-08-14 06:30 UTCVendor advisory
  29. 2026-08-13 22:00 UTCEPSS rescore
  30. 2026-08-12 20:46 UTCEG score recompute
  31. 2026-08-12 20:46 UTCVendor advisory
  32. 2026-08-12 13:50 UTCEPSS rescore
  33. 2026-08-11 20:52 UTCEG score recompute
  34. 2026-08-11 20:52 UTCVendor advisory
  35. 2026-08-11 03:54 UTCEG score recompute
  36. 2026-08-11 03:54 UTCVendor advisory
  37. 2026-08-11 00:00 UTCEPSS rescore
  38. 2026-08-10 08:13 UTCVendor advisory
  39. 2026-08-09 19:08 UTCEG score recompute
  40. 2026-08-09 19:08 UTCVendor advisory
  41. 2026-08-09 13:46 UTCEPSS rescore
  42. 2026-08-09 06:02 UTCEG score recompute
  43. 2026-08-09 06:02 UTCVendor advisory
  44. 2026-08-08 16:37 UTCEPSS rescore
  45. 2026-08-08 05:31 UTCEG score recompute
  46. 2026-08-08 05:31 UTCVendor advisory
  47. 2026-08-07 16:26 UTCVendor advisory
  48. 2026-08-06 18:49 UTCEG score recompute
  49. 2026-08-06 18:49 UTCVendor advisory
  50. 2026-08-06 13:46 UTCEPSS rescore
  51. 2026-08-06 00:55 UTCEG score recompute
  52. 2026-08-06 00:55 UTCVendor advisory
  53. 2026-08-05 19:17 UTCEPSS rescore
  54. 2026-08-04 15:10 UTCEPSS rescore
  55. 2026-08-04 10:38 UTCEPSS rescore
  56. 2026-08-03 23:39 UTCEG score recompute
  57. 2026-08-03 23:39 UTCVendor advisory
  58. 2026-08-03 10:36 UTCEPSS rescore
  59. 2026-08-02 15:26 UTCEG score recompute
  60. 2026-08-02 15:26 UTCVendor advisory
  61. 2026-08-02 02:27 UTCEPSS rescore
  62. 2026-08-01 04:16 UTCEPSS rescore
  63. 2026-07-30 16:28 UTCEPSS rescore
  64. 2026-07-30 01:30 UTCEPSS rescore
  65. 2026-07-27 14:13 UTCEPSS rescore
  66. 2026-07-25 14:18 UTCEPSS rescore
  67. 2026-07-25 14:18 UTCEPSS rescore
  68. 2026-07-24 14:17 UTCEPSS rescore
  69. 2026-07-24 14:17 UTCEPSS rescore
  70. 2026-07-23 14:18 UTCEPSS rescore
  71. 2026-07-23 14:18 UTCEPSS rescore
  72. 2026-07-23 03:09 UTCEG score recompute
  73. 2026-07-22 14:08 UTCEPSS rescore
  74. 2026-07-21 15:24 UTCEPSS rescore
  75. 2026-07-21 15:24 UTCEPSS rescore

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

Same vendor

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redhat:RHSA-2026:10255 · ubuntu:USN-8157-1

Frequently asked(5)

What is CVE-2026-32748?
CVE-2026-32748 is a high vulnerability published on March 26, 2026. Squid is a caching proxy for the Web. Prior to version 7.5, due to premature release of resource during expected lifetime and heap Use-After-Free bugs, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable…
When was CVE-2026-32748 disclosed?
CVE-2026-32748 was first published on March 26, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-32748 actively exploited?
CVE-2026-32748 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.0% probability of exploitation in the next 30 days (95th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-32748?
CVE-2026-32748 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-32748?
A fix for CVE-2026-32748 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-32748 are linked in the Vendor Advisories panel on this page.

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