Squid proxy server 2.4 and earlier allows remote attackers to cause a denial of service…
Priority LOW 28Published · 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
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
Squid proxy server 2.4 and earlier allows remote attackers to cause a denial of service (crash) via a mkdir-only FTP PUT request.
Why it matters now
EPSS 0.02847 86th percentileScored 2026-11-07
Fix Fixed 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
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Linux 6.2 | Fixed | RHSA-2001:113 |
| Red Hat Linux 7.0 | Fixed | RHSA-2001:113 |
| Red Hat Linux 7.1 | Fixed | RHSA-2001:113 |
| Red Hat Linux 7.2 | Fixed | RHSA-2001:113 |
Timeline
- 2026-10-02 Threatist record created from CVE-2001-0843
- 2026-10-03 Alias added: GHSA-3jpq-2j9m-x6ww
References
Patch 1
Other 1
More Squid Web Proxy vulnerabilities
- TI-2001-00985 Squid before 2.3STABLE5 in HTTP accelerator mode does not enable access control lists… CVSS 2.0HIGH 7.5
Sources
- CVE-2001-0843 · CVE Program
- CVE-2001-0843 · NVD
- FIRST EPSS
- GHSA-3jpq-2j9m-x6ww · GitHub Advisory Database · CC BY 4.0
- CVE-2001-0843 · 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