Halo prior to 2.20.13 allows bypassing file type detection and uploading malicious files such as .exe and .html files. Specifically, .html files can trigger stored XSS vulnerabilities. This vulnerability is fixed in 2.20.13
CVSS Score
6.1
EPSS Score
0.0
Published
2025-09-09
Halo v2.20.17 and before is vulnerable to Cross Site Scripting (XSS) in /halo_host/archives/{name}.
CVSS Score
6.1
EPSS Score
0.0
Published
2025-09-09
halo v2.20.17 and before is vulnerable to server-side request forgery (SSRF) in /apis/uc.api.storage.halo.run/v1alpha1/attachments/-/upload-from-url.
CVSS Score
9.1
EPSS Score
0.0
Published
2025-09-09
Halo is an open source website building tool. Prior to version 2.20.13, a vulnerability in Halo allows attackers to bypass file type validation controls. This bypass enables the upload of malicious files including executables and HTML files, which can lead to stored cross-site scripting attacks and potential remote code execution under certain circumstances. This issue has been patched in version 2.20.13.
CVSS Score
9.0
EPSS Score
0.002
Published
2025-04-25
Halo is an open source website building tool. A security vulnerability has been identified in versions prior to 2.19.0 of the Halo project. This vulnerability allows an attacker to execute malicious scripts in the user's browser through specific HTML and JavaScript code, potentially leading to a Cross-Site Scripting (XSS) attack. This vulnerability is fixed in 2.19.0.
CVSS Score
6.3
EPSS Score
0.001
Published
2024-09-11
Halo is an open source website building tool. A security vulnerability has been identified in versions prior to 2.17.0 of the Halo project. This vulnerability allows an attacker to execute malicious scripts in the user's browser through specific HTML and JavaScript code, potentially leading to a Cross-Site Scripting (XSS) attack. Users are advised to upgrade to version 2.17.0+. There are no known workarounds for this vulnerability.
CVSS Score
6.3
EPSS Score
0.003
Published
2024-09-02
An arbitrary file upload vulnerability in Halo up to v1.6.1 allows attackers to execute arbitrary code via a crafted .md file.
CVSS Score
4.8
EPSS Score
0.001
Published
2023-03-10
In Halo, versions v1.0.0 to v1.4.17 (latest) are vulnerable to Stored Cross-Site Scripting (XSS) in the article tag. An authenticated admin attacker can inject arbitrary javascript code that will execute on a victim’s server.
CVSS Score
4.8
EPSS Score
0.004
Published
2022-01-13
SSRF vulnerability in Halo <=1.3.2 exists in the SMTP configuration, which can detect the server intranet.
CVSS Score
7.5
EPSS Score
0.003
Published
2021-07-12
Halo before 1.2.0-beta.1 allows Server Side Template Injection (SSTI) because TemplateClassResolver.SAFER_RESOLVER is not used in the FreeMarker configuration.
CVSS Score
7.2
EPSS Score
0.004
Published
2019-12-26
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