How severe is CVE-2021-29060?

CVE-2021-29060 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-29060 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29060?

CVE-2021-29060 affects Color-string Project Color-string. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29060?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-29060 published?

CVE-2021-29060 was published on 2021-06-21 and last updated on 2026-06-17.

CVE-2021-29060

CVE-2021-29060 is a medium-severity vulnerability in Color-string Project Color-string with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Color-string Project Color-string
Published: 2021-06-21
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-29060?: 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.
How severe is CVE-2021-29060?: CVE-2021-29060 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-29060 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29060?: CVE-2021-29060 affects Color-string Project Color-string. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29060?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-29060 published?: CVE-2021-29060 was published on 2021-06-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:color-string_project:color-string:*:*:*:*:*:node.js:*:*

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