CVE-2025-53941 MEDIUM

CVE-2025-53941: Hollo renders posts received with form elements and allows submission

Vendor Fedify-Dev
Product hollo
Weakness CWE-79 · XSS
Published July 17, 2025
Last update July 17, 2025
View on NVD All CVEs

CVSS base score

6.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Versions prior to 0.6.5 allow HTML form elements to be submitted, making the software vulnerable to HTML injection. Version 0.6.5 fixes the issue.

Key dates

02Disclosure timeline

July 17, 2025 CVE published
July 17, 2025 Record updated