Path traversal in yaws
Priority MEDIUM 45CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
Yaws 1.91 has a directory traversal vulnerability in the way certain URLs are processed. A remote authenticated user could use this flaw to obtain content of arbitrary local files via specially-crafted URL request.
Why it matters now
EPSS 0.16142 96th 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| yaws | yaws | 1.91 | — | No fix listed | CNA |
- yaws Vendoryaws Affected 1.91 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:yaws:yaws:1.91:*:*:*:*:*:*:* | 1.91 | Vulnerable | yaws |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
- cpe:2.3:a:yaws:yaws:1.91:*:*:*:*:*:*:* Versions 1.91 Vulnerable ·yaws
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4350
- 2026-10-03 Alias added: GHSA-8xpm-277g-mcr3
References
Advisory 3
More Yaws vulnerabilities
- 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-2009-04256 Yaws 1.85 writes data to a log file without sanitizing non-printable characters, which… CVSS 2.0MEDIUM 5.0
- 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
Sources
- CVE-2011-4350 · CVE Program
- CVE-2011-4350 · NVD
- FIRST EPSS
- GHSA-8xpm-277g-mcr3 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-4350 · Red Hat security data · CC BY 4.0
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