CVE-2021-29060

Name: CVE-2021-29060
Creator: NVD / NIST
Published: 2021-06-21T16:15:08.113+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 3.13%

Last modified Jun 17, 2026

CVE-2021-29060 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Color-String version 1.5.5 and below which occurs when the application is provided and checks a crafted invalid HWB string.. EPSS estimates a 3.13% chance of exploitation in the next 30 days.

Description

A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Color-String version 1.5.5 and below which occurs when the application is provided and checks a crafted invalid HWB string.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

3.13%

86.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-770

Affected Software

Vendor	Product	Versions
Color-String Project	Color-String	< 1.5.5

References

https://github.com/Qix-/color-string/commit/0789e21284c33d89ebc4ab4ca6f759b9375ac9d3Patch, Third Party Advisory
https://github.com/yetingli/PoCs/blob/main/CVE-2021-29060/Color-String.mdExploit, Patch, Third Party Advisory
https://github.com/yetingli/SaveResults/blob/main/js/color-string.jsThird Party Advisory
https://www.npmjs.com/package/color-stringProduct
https://github.com/Qix-/color-string/commit/0789e21284c33d89ebc4ab4ca6f759b9375ac9d3Patch, Third Party Advisory
https://github.com/yetingli/PoCs/blob/main/CVE-2021-29060/Color-String.mdExploit, Patch, Third Party Advisory
https://github.com/yetingli/SaveResults/blob/main/js/color-string.jsThird Party Advisory
https://www.npmjs.com/package/color-stringProduct

Timeline

Published: Jun 21, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29060?

How severe is CVE-2021-29060?

CVE-2021-29060 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 3.13% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29060?

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-2021-29060?

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

Scan your code now

Source: NVD / NIST