What’s Vulnerable › Vulnerabilities

CVE-2023-28858

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-26 · updated 2026-06-17
• Weakness: CWE-193

Description

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.

Affected products

• Redis-Py: from 4.2.0 before 4.3.6; from 4.4.0 before 4.4.3; from 4.5.0 before 4.5.3 — fixed in 4.3.6, 4.4.3, 4.5.3

How to fix

Upgrade to a fixed version: Redis-Py 4.3.6, 4.4.3, 4.5.3. Check the vendor advisory for mitigations.

References

• 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
• 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

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