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Fencer Intel
medium 6.5

CVE-2011-4350 json

Yaws 1.91 has a directory traversal vulnerability in the way certain URLs are processed.

published 2019-11-26 6 y ago modified 2026-06-16 4 mo ago also EUVD-2011-4281

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
16.1%
EPSS 16.1% chance of exploitation in 30 days, percentile 96%
public exploits
1
Metasploit

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.

Patch / fix

  • yaws Debian 14, Debian 13, Debian 12 1.91-2

debian advisories DEBIAN-CVE-2011-4350

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-4350 updated cvss 6.8

yaws: Directory traversal flaw

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (Metasploit auxiliary/scanner/http/yaws_traversal)
  2. Published

Exploit prediction

16.14% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

  • yaws yaws

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.