CVE-2021-39371
HIGHCVSS 7.5/10EPSS 1.52%
Last modified
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/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
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
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-39371?
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.
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-39371?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST