XSS in Gitea

CVE-2021-28378

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

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.088 (94.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Gitea
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-28378?: CVE-2021-28378 is a low-severity vulnerability in Gitea, classified under Cross-site Scripting. CVSS score: 3.7/10. Published 2021-03-15.
How severe is CVE-2021-28378?: Low severity. CVSS v3 base score is 3.7 out of 10.
Is CVE-2021-28378 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.