An XML external entity (XXE) injection in PyWPS before 4.4.5 allows an attacker to view…
Priority LOW 36CWE-611Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-611 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.01524 74th percentileScored 2026-11-07
Fix Fixed pywps (PyPI): 4.5.0
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | pywps (PyPI) | before 4.5.0 | 4.5.0 | Patch available | GHSA-p9wf-3xpg-c9g5 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- pywps (PyPI) Vendor— Affected before 4.5.0 Fixed in 4.5.0 Patch available GHSA-p9wf-3xpg-c9g5
Remediation
- Fix · GHSA-p9wf-3xpg-c9g5 pywps (PyPI) Fixed in 4.5.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-39371
- 2026-10-03 Alias added: GHSA-p9wf-3xpg-c9g5
References
Advisory 3
Sources
- CVE-2021-39371 · CVE Program
- CVE-2021-39371 · NVD
- FIRST EPSS
- GHSA-p9wf-3xpg-c9g5 · GitHub Advisory Database · CC BY 4.0
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