Off-by-one Error The advisory has been revoked - it doesn't affect any version of package python-redis (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2510-PYTHONREDIS-15022655
- published17 Jan 2026
- disclosed26 Mar 2023
Introduced: 26 Mar 2023
CVE-2023-28858 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:25.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-redis package and not the python-redis package as distributed by Ubuntu.
redis-py before 4.5.3 leaves a connection open after canceling an async Redis command at an inopportune time, and can send response data to the client of an unrelated request in an off-by-one manner. NOTE: this CVE Record was initially created in response to reports about ChatGPT, and 4.3.6, 4.4.3, and 4.5.3 were released (changing the behavior for pipeline operations); however, please see CVE-2023-28859 about addressing data leakage across AsyncIO connections in general.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-28858
- https://github.com/redis/redis-py/compare/v4.3.5...v4.3.6
- https://github.com/redis/redis-py/compare/v4.4.2...v4.4.3
- https://github.com/redis/redis-py/compare/v4.5.2...v4.5.3
- https://github.com/redis/redis-py/issues/2624
- https://github.com/redis/redis-py/pull/2641
- https://openai.com/blog/march-20-chatgpt-outage