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CVE-2025-53941

Good to know:

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Date: July 17, 2025

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.

Severity Score

Related Resources (5)

https://github.com/fedify-dev/hollo/commit/f9d25e10ba5406c27f9e87dfb01f75b6a52f2410
https://nvd.nist.gov/vuln/detail/CVE-2025-53941
https://github.com/fedify-dev/hollo/security/advisories/GHSA-w7gc-g3x7-hq8h
https://github.com/fedify-dev/hollo/releases/tag/0.6.5
https://www.mend.io/vulnerability-database/CVE-2025-53941

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Top Fix

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Upgrade Version

Upgrade to version https://github.com/fedify-dev/hollo.git - 0.6.5

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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