Vulnerability Description
Python JSON Logger is a JSON Formatter for Python Logging. Between 30 December 2024 and 4 March 2025 Python JSON Logger was vulnerable to RCE through a missing dependency. This occurred because msgspec-python313-pre was deleted by the owner leaving the name open to being claimed by a third party. If the package was claimed, it would allow them RCE on any Python JSON Logger user who installed the development dependencies on Python 3.13 (e.g. pip install python-json-logger[dev]). This issue has been resolved with 3.3.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nhairs | Python Json Logger | < 3.3.0 |
Related Weaknesses (CWE)
References
- https://github.com/nhairs/python-json-logger/commit/2548e3a2e3cedf6bef3ee7c60c55Patch
- https://github.com/nhairs/python-json-logger/commit/e7761e56edb980cfab0165e32469Patch
- https://github.com/nhairs/python-json-logger/security/advisories/GHSA-wmxh-pxcx-ExploitVendor Advisory
- https://github.com/nhairs/python-json-logger/security/advisories/GHSA-wmxh-pxcx-ExploitVendor Advisory
FAQ
What is CVE-2025-27607?
CVE-2025-27607 is a vulnerability with a CVSS score of 8.8 (HIGH). Python JSON Logger is a JSON Formatter for Python Logging. Between 30 December 2024 and 4 March 2025 Python JSON Logger was vulnerable to RCE through a missing dependency. This occurred because msgspe...
How severe is CVE-2025-27607?
CVE-2025-27607 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-27607?
Check the references section above for vendor advisories and patch information. Affected products include: Nhairs Python Json Logger.