CVE-2021-29274

CVE-2021-29274 is a medium-severity vulnerability in Redmine with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Redmine
Published: 2021-03-29
Last modified: 2026-06-17

Description

Redmine 4.1.x before 4.1.2 allows XSS because an issue's subject is mishandled in the auto complete tip.

Frequently asked questions

What is CVE-2021-29274?: Redmine 4.1.x before 4.1.2 allows XSS because an issue's subject is mishandled in the auto complete tip.
How severe is CVE-2021-29274?: CVE-2021-29274 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-29274 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29274?: CVE-2021-29274 affects Redmine. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29274?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-29274 published?: CVE-2021-29274 was published on 2021-03-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redmine:redmine:*:*:*:*:*:*:*:*

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