CVE-2025-40702: Cross-Site Scripting (XSS) vulnerability in OpenAtlas by ACDH-CH

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-29 · updated 2026-10-18
Weakness: CWE-79

Description

Cross-Site Scripting (XSS) vulnerability in OpenAtlas v8.9.0 from the Austrian Centre for Digital Humanities and Cultural Heritage (ACDH-CH), due to inadequate validation of user input when a POST request is sent. The vulnerabilities could allow a remote user to send specially crafted queries to an authenticated user and steal their session cookie details, via the "/insert/file" petition, "creator" and "license_holder" parameters.

Affected products

ACDH-CH OpenAtlas: 8.9.0

References

https://github.com/craws/OpenAtlas
https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-cross-site-scripting-xss-vulnerabilities-openatlas-acdh-ch

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