CVE-2025-27607HIGH 8.8EPSS p70.0%
CVE-2025-27607CVE-2025-27607
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.
Scoring
| CVSS 3.1 | 8.8 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 1.45% probability of exploitation · percentile 70.0% · 2026-06-18T12:00:27Z |
| Published | 2025-03-07 |
| Last modified | 2025-07-01 |
Underlying weaknesses· 1
References
- https://github.com/nhairs/python-json-logger/commit/2548e3a2e3cedf6bef3ee7c60c55b7c02d1af11a
- https://github.com/nhairs/python-json-logger/commit/e7761e56edb980cfab0165e32469d5fd017a5d72
- https://github.com/nhairs/python-json-logger/security/advisories/GHSA-wmxh-pxcx-9w24
- https://github.com/nhairs/python-json-logger/security/advisories/GHSA-wmxh-pxcx-9w24
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Inclusion of Functionality from Untrusted Control Spherecwe-829 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.