vciy

CVE-2026-32748

INDEX BUILT · 2026-09-20

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Squid has Denial of Service in ICP Response handling

CVE-2026-327484 of 4 sources documented this
23

rank 23 = 2 + 19 + 0 + 2 + 0

rank@v1 · backlog

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.08931  ·  without this subject the record ranks 21

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.5, from NVD  ·  without this subject the record ranks 4

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 23

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 21

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 23

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$273,000over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$273,000 = $4.99M incident cost x 0.6121449559255632 exposure x 0.08931 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.08931EPSSNOT IN KEVas of 2026-09-20
Severity8.7 HIGHreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-03-26, 96 days at 0.09, as of 2026-06-30. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Sources disagree here.

Severity score
GitHub_M8.7 HIGHreceipt
NVD7.5 HIGHreceipt
Scoring standard
GitHub_MCVSS v4.0receipt
NVDCVSS v3.1receipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

Running squid-cache squid? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · no user interaction · low attack complexity · no attack requirementsreceipt
ImpactComplete availability loss, with impact on subsequent systemsreceipt
Scored fromCVSS v4.0 · the CNA's vectorreceipt
Weakness classCWE-413 Improper Resource Locking; CWE-416 Use After Free; CWE-826 Premature Release of Resource During Expected Lifetimereceipt
Published consequencesCWE-413: Integrity, Availability: Modify Application Data, DoS: Instability, DoS: Crash, Exit, or Restart[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchsquid 7.5receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA8.7 HIGHreceipt
CVSS, NVD7.5 HIGHreceipt
Exploit probability0.08931 · top 5% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byGitHub_Mreceipt
Recorded changes10 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productsquid-cache squidreceipt
Published rangessquid-cache squid < 7.5receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

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. receipt

NVD's analysis a second authority

severity
7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
weakness
CWE-413; CWE-416; CWE-826
affected versions
squid-cache squid < 7.5
also scored by
[email protected] 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · 7.5…

The CNA scored it 8.7 and NVD 7.5. Both are shown because both were published; we do not pick one.

check it yourself github.com github.com receipt

Movement the material steps

26 Mar 20260.01797
15 Jun 20260.02734 · scoring model v2026.06.15
30 Jun 20260.08931
Show all 10 observations
26 Mar 20260.01797
27 Mar 20260.00977
1 Apr 20260.01281
20 Apr 20260.01725
21 Apr 20260.00349
27 Apr 20260.0038
13 May 20260.00235
2 Jun 20260.0021
15 Jun 20260.02734
30 Jun 20260.08931

10 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.08931Published2026-03-26Index as of2026-06-30

The record had been public for 3 months when this index was last written.

Published 2026-03-26 receipt · Index as of 2026-06-30 derived

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