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CVE-2025-61788— Opencast Paella Player 7 vulnerable to Cross-Site-Scripting

Quick assessment

Affected
opencast opencast
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.

Opencast是Opencast组织的一款用于大规模自动视频捕获，管理和分发的直播视频支撑软件。 Opencast 17.8之前版本和18.2之前版本存在跨站脚本漏洞，该漏洞源于未过滤用户输入，可能导致跨站脚本攻击。

AI Predicted 5.4 Difficulty: Easy EPSS 0.21% · P11
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I. Basic Information for CVE-2025-61788

Vulnerability Information
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Vulnerability Title
Opencast Paella Player 7 vulnerable to Cross-Site-Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to Opencast 17.8 and 18.2, the paella would include and render some user inputs (metadata like title, description, etc.) unfiltered and unmodified. The vulnerability allows attackers to inject and malicious HTML and JavaScript in the player, which would then be executed in the browsers of users watching the prepared media. This can then be used to modify the site or to execute actions in the name of logged-in users. To inject malicious metadata, an attacker needs write access to the system. For example, the ability to upload media and modify metadata. This cannot be exploited by unauthenticated users. This issue is fixed in Opencast 17.8 and 18.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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
Opencast 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Opencast是Opencast组织的一款用于大规模自动视频捕获，管理和分发的直播视频支撑软件。 Opencast 17.8之前版本和18.2之前版本存在跨站脚本漏洞，该漏洞源于未过滤用户输入，可能导致跨站脚本攻击。
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
opencast opencast < 17.8 -

II. Public POCs for CVE-2025-61788

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III. Intelligence Information for CVE-2025-61788

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IV. Related Vulnerabilities

Same product: opencast
Same vendor: opencast
Same weakness: CWE-79

V. Comments for CVE-2025-61788

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