CVE catalog
CVE-2025-27607
python-pythonjsonlogger: CVE-2025-27607
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.61% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-pythonjsonlogger | sid | 3.3.0-1 | not affected |
| Debian | python-pythonjsonlogger | forky | 3.3.0-1 | not affected |
| Debian | python-pythonjsonlogger | trixie | 3.3.0-1 | not affected |
| Debian | python-pythonjsonlogger | bookworm | 2.0.1-3 | not affected |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-pythonjsonlogger | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | python-pythonjsonlogger | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | python-pythonjsonlogger | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | python-pythonjsonlogger | source | bookworm | Not affected | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-pythonjsonlogger]Not affected
Source package: [python-pythonjsonlogger]
Details (2)
2.0.1-3· all · bookwormNot affected
dsa · python-pythonjsonlogger · debian · bookworm
2.0.1-3· all · bookwormNot affected
dsa · python-pythonjsonlogger · debian · bookworm
Observed:
References
- [https://security-tracker.debian.org/tracker/CVE-2025-27607]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-27607.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-1648.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [Red Hat security advisories and VEX]