Read the docs
TI-2009-04256 Aliases CVE-2009-4495GHSA-5c66-p5v7-wjxg

Yaws 1.85 writes data to a log file without sanitizing non-printable characters, which…

Priority LOW 35CWE-20Published · 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
Partial · None · None
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

Yaws 1.85 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

Why it matters now

EPSS 0.09804 95th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:yaws:yaws:1.85:*:*:*:*:*:*:*1.85Vulnerableyaws
  • cpe:2.3:a:yaws:yaws:1.85:*:*:*:*:*:*:* Versions 1.85 Vulnerable ·yaws

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-4495
  2. 2026-10-03 Alias added: GHSA-5c66-p5v7-wjxg

References

Exploit 1

  • TI-2017-08057 Yaws 1.91 allows Unauthenticated Remote File Disclosure via HTTP Directory Traversal with… CVSS 3.0HIGH 7.5
  • TI-2020-15240 CGI implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to OS command injection. CVSS 3.1CRITICAL 9.8
  • TI-2020-14922 WebDAV implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to XXE injection. CVSS 3.1CRITICAL 9.8
  • TI-2011-03815 Path traversal in yaws CVSS 3.1MEDIUM 6.5
  • TI-2009-00716 Yaws before 1.80 allows remote attackers to cause a denial of service (memory consumption… CVSS 2.0MEDIUM 5.0
  • TI-2010-03935 Directory traversal vulnerability in Yaws 1.89 allows remote attackers to read arbitrary… CVSS 2.0MEDIUM 5.0
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences