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Vulnerability record · CVE-2020-24379 · published 9 September 2020

CVE-2020-24379: Yaws xml external entity (xxe) vulnerability

Yaws · Yaws

WebDAV implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to XXE injection.

9.8 CVSS 3.1 Critical EPSS 3.4% · top 11.7% CWE-611 · XML external entity (XXE)
9.8CVSS 3.1 base score, v2 6.8
3.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
14References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

WebDAV implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to XXE injection.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/erlyaws/yaws/commits/master PatchThird Party Advisory
https://github.com/vulnbe/poc-yaws-dav-xxe ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00022.html Mailing ListThird Party Advisory
https://packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection.html ExploitThird Party AdvisoryVDB Entry
https://usn.ubuntu.com/4569-1/ Third Party Advisory
https://vuln.be/post/yaws-xxe-and-shell-injections/ Broken LinkThird Party Advisory
https://www.debian.org/security/2020/dsa-4773 Third Party Advisory
https://github.com/erlyaws/yaws/commits/master PatchThird Party Advisory
https://github.com/vulnbe/poc-yaws-dav-xxe ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00022.html Mailing ListThird Party Advisory
https://packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection.html ExploitThird Party AdvisoryVDB Entry
https://usn.ubuntu.com/4569-1/ Third Party Advisory
https://vuln.be/post/yaws-xxe-and-shell-injections/ Broken LinkThird Party Advisory
https://www.debian.org/security/2020/dsa-4773 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-24379), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.