How severe is CVE-2021-28378?

CVE-2021-28378 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-28378 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28378?

CVE-2021-28378 affects Gitea. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28378?

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

When was CVE-2021-28378 published?

CVE-2021-28378 was published on 2021-03-15 and last updated on 2026-06-17.

CVE-2021-28378

CVE-2021-28378 is a low-severity vulnerability in Gitea with a CVSS 3.x base score of 3.7. 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: Low (CVSS 3.x base score 3.7)
CVSS v2: 3.5
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Gitea
Published: 2021-03-15
Last modified: 2026-06-17

Description

Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.

Frequently asked questions

What is CVE-2021-28378?: Gitea 1.12.x and 1.13.x before 1.13.4 allows XSS via certain issue data in some situations.
How severe is CVE-2021-28378?: CVE-2021-28378 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-28378 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28378?: CVE-2021-28378 affects Gitea. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28378?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-28378 published?: CVE-2021-28378 was published on 2021-03-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*

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