CVE-2023-28859

Name: CVE-2023-28859
Creator: NVD / NIST
Published: 2023-03-26T19:15:06.85+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2023-28859 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.03%

59.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-459

Affected Software

Vendor	Product	Versions
Redis	Redis-Py	>= 4.2.0, < 4.4.4
Redis	Redis-Py	>= 4.5.0, < 4.5.4

References

https://github.com/redis/redis-py/issues/2665Issue Tracking, Patch, Vendor Advisory
https://github.com/redis/redis-py/pull/2641Issue Tracking, Patch
https://github.com/redis/redis-py/pull/2666Release Notes
https://github.com/redis/redis-py/releases/tag/v4.4.4Release Notes
https://github.com/redis/redis-py/releases/tag/v4.5.4Release Notes
https://github.com/redis/redis-py/issues/2665Issue Tracking, Patch, Vendor Advisory
https://github.com/redis/redis-py/pull/2641Issue Tracking, Patch
https://github.com/redis/redis-py/pull/2666Release Notes
https://github.com/redis/redis-py/releases/tag/v4.4.4Release Notes
https://github.com/redis/redis-py/releases/tag/v4.5.4Release Notes

Timeline

Published: Mar 26, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-28859?

How severe is CVE-2023-28859?

CVE-2023-28859 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2023-28859?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-28859?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST