CVE-2026-22041
📋 TL;DR
CVE-2026-22041 is a type conversion vulnerability in the Logging Redactor Python library that causes type errors when non-string data is processed with %d format specifiers. This affects applications using Logging Redactor versions before 0.0.6 for log redaction. The vulnerability can cause application crashes or unexpected behavior when logging mixed data types.
💻 Affected Systems
- Logging Redactor Python library
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Application crashes leading to denial of service, potentially disrupting logging functionality and obscuring security monitoring.
Likely Case
Logging failures or application errors when processing non-string data with %d format specifiers, potentially causing incomplete log redaction.
If Mitigated
Minor logging inconsistencies or warnings that don't affect core application functionality.
🎯 Exploit Status
Exploitation requires triggering specific logging patterns with mixed data types. No known active exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.0.6
Vendor Advisory: https://github.com/armurox/loggingredactor/security/advisories/GHSA-rvjx-cfjh-5mc9
Restart Required: No
Instructions:
1. Update Logging Redactor: pip install --upgrade loggingredactor>=0.0.6
2. Verify the update: pip show loggingredactor
3. Test logging functionality with mixed data types
4. No application restart required for Python library updates
🔧 Temporary Workarounds
Avoid %d format specifiers
allModify logging code to avoid using %d format specifiers with Logging Redactor when processing non-string data
🧯 If You Can't Patch
- Implement input validation to ensure only string types are passed to logging functions
- Use alternative logging libraries or custom logging solutions that properly handle type conversions
🔍 How to Verify
Check if Vulnerable:
Check installed version: pip show loggingredactor | grep Version
If version is earlier than 0.0.6, the system is vulnerable.Check Version:
pip show loggingredactor | grep VersionVerify Fix Applied:
After updating, test logging with mixed data types: python -c "import loggingredactor; print('Testing logging with mixed types')"📡 Detection & Monitoring
Log Indicators:
- TypeError exceptions in logs
- Missing or malformed log entries
- Application crashes during logging operations
SIEM Query:
source="application.logs" AND ("TypeError" OR "%d" OR "loggingredactor")