CVE-2025-27607

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 v3.1

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

1.96% chance of exploitation in the next 30 days, 79th percentile

Published

2025-03-07

Proof-of-concept exploits (1)

• nhairs/python-json-logger/security/advisories/GHSA-wmxh-pxcx-9w24

References

• CVE Record
• NVD entry

Related

• CVE-2025-27597
• CVE-2025-27636
• CVE-2025-27591
• CVE-2025-2775
• CVE-2025-27590
• CVE-2025-27751