What’s Vulnerable › Vulnerabilities

CVE-2023-28859

• Severity: medium (CVSS 6.5 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-459

Description

redis-py before 4.4.4 and 4.5.x before 4.5.4 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. (This could, for example, happen for a non-pipeline operation.) NOTE: the solutions for CVE-2023-28859 address data leakage across AsyncIO connections in general.

Affected products

• Redis-Py: from 4.2.0 before 4.4.4; from 4.5.0 before 4.5.4 — fixed in 4.4.4, 4.5.4

How to fix

Upgrade to a fixed version: Redis-Py 4.4.4, 4.5.4. Check the vendor advisory for mitigations.

References

• https://github.com/redis/redis-py/issues/2665
• https://github.com/redis/redis-py/pull/2641
• https://github.com/redis/redis-py/pull/2666
• https://github.com/redis/redis-py/releases/tag/v4.4.4
• https://github.com/redis/redis-py/releases/tag/v4.5.4
• https://github.com/redis/redis-py/issues/2665
• https://github.com/redis/redis-py/pull/2641
• https://github.com/redis/redis-py/pull/2666
• https://github.com/redis/redis-py/releases/tag/v4.4.4
• https://github.com/redis/redis-py/releases/tag/v4.5.4

Get alerted when CVE-2023-28859 or the next vulnerability affects your stack