CVE-2021-39371

Name: CVE-2021-39371
Creator: NVD / NIST
Published: 2021-08-23T01:15:06.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.52%

Last modified Jun 17, 2026

CVE-2021-39371 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An XML external entity (XXE) injection in PyWPS before 4.4.5 allows an attacker to view files on the application server filesystem by assigning a path to the entity. OWSLib 0.24.1 may also be affected.. EPSS estimates a 1.52% chance of exploitation in the next 30 days.

Description

An XML external entity (XXE) injection in PyWPS before 4.4.5 allows an attacker to view files on the application server filesystem by assigning a path to the entity. OWSLib 0.24.1 may also be affected.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.52%

71.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-611

Affected Software

Vendor	Product	Versions
Osgeo	Owslib	0.24.1
Osgeo	Pywps	< 4.4.5
Debian	Debian Linux	9.0

References

https://github.com/geopython/OWSLib/issues/790Issue Tracking, Patch, Third Party Advisory
https://github.com/geopython/pywps/pull/616Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/09/msg00001.htmlMailing List, Third Party Advisory
https://github.com/geopython/OWSLib/issues/790Issue Tracking, Patch, Third Party Advisory
https://github.com/geopython/pywps/pull/616Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/09/msg00001.htmlMailing List, Third Party Advisory

Timeline

Published: Aug 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39371?

How severe is CVE-2021-39371?

CVE-2021-39371 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.52% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39371?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39371?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST