CVE-2025-53941— Hollo renders posts received with form elements and allows submission
Quick assessment
Affected
fedify-dev hollo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Hollo是Fedify开源的一个微型博客软件。 Hollo 0.6.5之前版本存在安全漏洞，该漏洞源于允许提交HTML表单元素，可能导致HTML注入。
Possible ATT&CK Techniques 2 AI
T1189 · Drive-by Compromise T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2025-53941
Vulnerability Information
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Vulnerability Title
Hollo renders posts received with form elements and allows submission
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Hollo 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hollo是Fedify开源的一个微型博客软件。 Hollo 0.6.5之前版本存在安全漏洞，该漏洞源于允许提交HTML表单元素，可能导致HTML注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| fedify-dev | hollo | < 0.6.5 | - |
|
II. Public POCs for CVE-2025-53941
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
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Same weakness: CWE-79
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Jivejdon through 5.0 Reflected XSS via postThread.jsp to and -
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Jivejdon through commit ee67a65e Stored XSS via Markdown Lin
V. Comments for CVE-2025-53941
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