The htcpHandleTstRequest function in htcp.c in Squid 2.x before 2.6.STABLE24 and 2.7…
Priority MEDIUM 47Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The htcpHandleTstRequest function in htcp.c in Squid 2.x before 2.6.STABLE24 and 2.7 before 2.7.STABLE8, and htcp.cc in 3.0 before 3.0.STABLE24, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets to the HTCP port.
Why it matters now
EPSS 0.31074 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 33
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:squid-cache:squid:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:2.1:*:*:*:*:*:*:* | 2.1 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:2.2:*:*:*:*:*:*:* | 2.2 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:2.3:*:*:*:*:*:*:* | 2.3 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:2.4:*:*:*:*:*:*:* | 2.4 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:2.5:*:*:*:*:*:*:* | 2.5 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:2.6:*:*:*:*:*:*:* | 2.6 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:2.7:*:*:*:*:*:*:* | 2.7 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:* | 2.7 stable3 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:* | 2.7 stable4 | Vulnerable | squid-cache |
- cpe:2.3:a:squid-cache:squid:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:2.3:*:*:*:*:*:*:* Versions 2.3 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:2.4:*:*:*:*:*:*:* Versions 2.4 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:2.5:*:*:*:*:*:*:* Versions 2.5 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:2.6:*:*:*:*:*:*:* Versions 2.6 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:2.7:*:*:*:*:*:*:* Versions 2.7 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:* Versions 2.7 stable3 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:* Versions 2.7 stable4 Vulnerable ·squid-cache
Show 23 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:squid-cache:squid:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable1:*:*:*:*:*:*:* | 3.0.stable1 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable2:*:*:*:*:*:*:* | 3.0.stable2 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable3:*:*:*:*:*:*:* | 3.0.stable3 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable4:*:*:*:*:*:*:* | 3.0.stable4 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable5:*:*:*:*:*:*:* | 3.0.stable5 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable6:*:*:*:*:*:*:* | 3.0.stable6 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable7:*:*:*:*:*:*:* | 3.0.stable7 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable8:*:*:*:*:*:*:* | 3.0.stable8 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable9:*:*:*:*:*:*:* | 3.0.stable9 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable11:*:*:*:*:*:*:* | 3.0.stable11 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable12:*:*:*:*:*:*:* | 3.0.stable12 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable13:*:*:*:*:*:*:* | 3.0.stable13 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable14:*:*:*:*:*:*:* | 3.0.stable14 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable15:*:*:*:*:*:*:* | 3.0.stable15 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable16:*:*:*:*:*:*:* | 3.0.stable16 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable17:*:*:*:*:*:*:* | 3.0.stable17 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable18:*:*:*:*:*:*:* | 3.0.stable18 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable19:*:*:*:*:*:*:* | 3.0.stable19 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable20:*:*:*:*:*:*:* | 3.0.stable20 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable21:*:*:*:*:*:*:* | 3.0.stable21 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable22:*:*:*:*:*:*:* | 3.0.stable22 | Vulnerable | squid-cache |
| cpe:2.3:a:squid-cache:squid:3.0.stable23:*:*:*:*:*:*:* | 3.0.stable23 | Vulnerable | squid-cache |
- cpe:2.3:a:squid-cache:squid:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable1:*:*:*:*:*:*:* Versions 3.0.stable1 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable2:*:*:*:*:*:*:* Versions 3.0.stable2 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable3:*:*:*:*:*:*:* Versions 3.0.stable3 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable4:*:*:*:*:*:*:* Versions 3.0.stable4 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable5:*:*:*:*:*:*:* Versions 3.0.stable5 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable6:*:*:*:*:*:*:* Versions 3.0.stable6 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable7:*:*:*:*:*:*:* Versions 3.0.stable7 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable8:*:*:*:*:*:*:* Versions 3.0.stable8 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable9:*:*:*:*:*:*:* Versions 3.0.stable9 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable11:*:*:*:*:*:*:* Versions 3.0.stable11 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable12:*:*:*:*:*:*:* Versions 3.0.stable12 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable13:*:*:*:*:*:*:* Versions 3.0.stable13 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable14:*:*:*:*:*:*:* Versions 3.0.stable14 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable15:*:*:*:*:*:*:* Versions 3.0.stable15 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable16:*:*:*:*:*:*:* Versions 3.0.stable16 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable17:*:*:*:*:*:*:* Versions 3.0.stable17 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable18:*:*:*:*:*:*:* Versions 3.0.stable18 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable19:*:*:*:*:*:*:* Versions 3.0.stable19 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable20:*:*:*:*:*:*:* Versions 3.0.stable20 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable21:*:*:*:*:*:*:* Versions 3.0.stable21 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable22:*:*:*:*:*:*:* Versions 3.0.stable22 Vulnerable ·squid-cache
- cpe:2.3:a:squid-cache:squid:3.0.stable23:*:*:*:*:*:*:* Versions 3.0.stable23 Vulnerable ·squid-cache
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2010-0639
- 2026-10-03 Alias added: GHSA-cg3x-2572-rpvr
References
Patch 2
Advisory 5
More squid-cache Squid vulnerabilities
- TI-2025-38486 Squid vulnerable to information disclosure via authentication credential leakage in error handling CVSS 3.1CRITICAL 10.0
- TI-2024-16845 Denial of Service in HTTP Header parser in squid proxy CVSS 3.1HIGH 7.5
- TI-2024-16566 SQUID-2024:1 Denial of Service in HTTP Chunked Decoding CVSS 3.1HIGH 8.6
- TI-2023-26921 Denial of Service in HTTP Message Processing in Squid CVSS 3.1HIGH 8.6
- TI-2023-27496 SQUID-2023:10 Denial of Service in HTTP Request parsing CVSS 3.1HIGH 8.6
- TI-2023-25306 Squid: denial of service in http digest authentication CVSS 3.1HIGH 8.6
Sources
- CVE-2010-0639 · CVE Program
- CVE-2010-0639 · NVD
- FIRST EPSS
- GHSA-cg3x-2572-rpvr · GitHub Advisory Database · CC BY 4.0
- CVE-2010-0639 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences