CVE-2021-29469

Name: CVE-2021-29469
Creator: NVD / NIST
Published: 2021-04-23T18:15:08.303+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.67%

Last modified Jun 17, 2026

CVE-2021-29469 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Node-redis is a Node.js Redis client. Before version 3.1.1, when a client is in monitoring mode, the regex begin used to detected monitor messages could cause exponential backtracking on some strings. EPSS estimates a 1.67% chance of exploitation in the next 30 days.

Description

Node-redis is a Node.js Redis client. Before version 3.1.1, when a client is in monitoring mode, the regex begin used to detected monitor messages could cause exponential backtracking on some strings. This issue could lead to a denial of service. The issue is patched in version 3.1.1.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.67%

73.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Redis.Js	Redis	< 3.1.1

References

https://github.com/NodeRedis/node-redis/commit/2d11b6dc9b9774464a91fb4b448bad8bf699629ePatch, Third Party Advisory
https://github.com/NodeRedis/node-redis/releases/tag/v3.1.1Third Party Advisory
https://github.com/NodeRedis/node-redis/security/advisories/GHSA-35q2-47q7-3pc3Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210611-0010/Third Party Advisory
https://github.com/NodeRedis/node-redis/commit/2d11b6dc9b9774464a91fb4b448bad8bf699629ePatch, Third Party Advisory
https://github.com/NodeRedis/node-redis/releases/tag/v3.1.1Third Party Advisory
https://github.com/NodeRedis/node-redis/security/advisories/GHSA-35q2-47q7-3pc3Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210611-0010/Third Party Advisory

Timeline

Published: Apr 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29469?

How severe is CVE-2021-29469?

CVE-2021-29469 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.67% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29469?

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-2021-29469?

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

Scan your code now

Source: NVD / NIST