CVE-2026-59102

Forgejo before 15.0.3 contains a stored cross-site scripting vulnerability that allows authenticated attackers to execute arbitrary JavaScript in other users' browsers by setting a full name containing an HTML payload and triggering an Actions run. When the DEFAULT_SHOW_FULL_NAME option is enabled, the run description is assembled server-side with the user's display name interpolated into an HTML string via a translation function that does not escape its arguments, and the frontend renders the result using a Vue v-html binding, causing script execution for any user who views the affected Actions run page.

CVSS v4.0

2.1 LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.35% chance of exploitation in the next 30 days, 27th percentile

Published

2026-07-02

Updated

2026-07-06

Proof-of-concept exploits (1)

• geo-chen/oss/blob/main/forgejo.md

References

• CVE Record
• NVD entry

Related

• CVE-2026-59100
• CVE-2026-59112
• CVE-2026-59099
• CVE-2026-59197
• CVE-2026-59098
• CVE-2026-59198