CVE-2023-49286

Denial of Service in Helper Process management

HIGH
7.5
CVSS Score
Published: December 4, 2023 at 10:53 PM UTC
Updated: June 17, 2026 at 06:35 AM UTC
2 products affected across 1 vendorSquidCache Squid

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Severity
HIGH7.5
Exploit prediction
EPSS 10%

Description

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 6.4
Affected range stops below 6.5, so it looks safe — our inference, not a vendor statement
v ≤ 6.4
Affected range stops below 6.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-253CWE-617

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