Medium Apereo CVEs

10 CVEs, 1 exploited

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Overview 10 matches · 0 protected · 1 exploited · 0 CISA KEV · 1 public PoC · 0 EPSS ≥ 0.5

10matches 0protected0.0% 1exploited10.0% 0CISA KEV0.0% 1public PoC10.0% 0EPSS ≥ 0.50.0%

Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 1 10.0% No exploit published 9 90.0%

Critical 0 0.0% High 0 0.0% Medium 10 100.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%

blocked by ARMR today 0 0.0% partly blocked 0 0.0% not blocked 10 100.0% not established 0 0.0% unrecorded 0 0.0%

Exploited 1 10.0% Working exploit published 0 0.0% Proof of concept only 0 0.0% Forecast only 0 0.0% No public exploit 9 90.0%

split by StatusSeverityProtectionExploit maturity peak 4 / year

20171 No exploit published1 Medium1 not blocked1 No public exploit1 20180 20190 20202 No exploit published2 Medium2 not blocked2 No public exploit2 20211 Mitigation candidate1 Medium1 not blocked1 Exploited1 20222 No exploit published2 Medium2 not blocked2 No public exploit2 20230 20240 20254 No exploit published4 Medium4 not blocked4 No public exploit4

201720182019202020212022202320242025

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CVE	Severity	Published▾	Status	Exploitation	Description
CVE-2025-61788	Medium	2025-10-08	No exploit published	No public exploit	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.
CVE-2025-54380	Medium	2025-07-26	No exploit published	No public exploit	Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to version 17.6, Opencast would incorrectly send the hashed global system account credentials (ie: org.opencastproject.security.digest.user and org.opencastproject.security.digest.pass) when attempting to fetch mediapackage elements included in a mediapackage XML file. A previous CVE prevented many cases where the credentials were inappropriately sent, but not all. Anyone with ingest permissions could cause Opencast to send its hashed global system account credentials to a url of their choosing. This issue is fixed in Opencast 17.6.
CVE-2025-3986	Medium	2025-04-27	No exploit published	No public exploit	A vulnerability was found in Apereo CAS 5.2.6. It has been declared as problematic. This vulnerability affects unknown code of the file cas-5.2.6\core\cas-server-core-configuration-metadata-repository\src\main\java\org\apereo\cas\metadata\rest\CasConfigurationMetadataServerController.java. The manipulation of the argument Name leads to inefficient regular expression complexity. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVE-2025-3985	Medium	2025-04-27	No exploit published	No public exploit	A vulnerability was found in Apereo CAS 5.2.6. It has been classified as problematic. This affects the function ResponseEntity of the file cas-5.2.6\webapp-mgmt\cas-management-webapp-support\src\main\java\org\apereo\cas\mgmt\services\web\ManageRegisteredServicesMultiActionController.java. The manipulation of the argument Query leads to inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVE-2022-41965	Medium	2022-11-28	No exploit published	No public exploit	Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to Opencast 12.5, Opencast's Paella authentication page could be used to redirect to an arbitrary URL for authenticated users. The vulnerability allows attackers to redirect users to sites outside of one's Opencast install, potentially facilitating phishing attacks or other security issues. This issue is fixed in Opencast 12.5 and newer.
CVE-2022-29237	Medium	2022-05-24	No exploit published	No public exploit	Opencast is a free and open source solution for automated video capture and distribution at scale. Prior to Opencast 10.14 and 11.7, users could pass along URLs for files belonging to organizations other than the user's own, which Opencast would then import into the current organization, bypassing organizational barriers. Attackers must have full access to Opencast's ingest REST interface, and also know internal links to resources in another organization of the same Opencast cluster. Users who do not run a multi-tenant cluster are not affected by this issue. This issue is fixed in Opencast 10.14 and 11.7.
CVE-2021-42567	Medium	2021-12-07	Mitigation candidate	Exploited	Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints.
CVE-2020-26234	Medium	2020-12-08	No exploit published	No public exploit	Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for man-in-the-middle attacks. This problem is fixed in Opencast 7.9 and Opencast 8.8 Please be aware that fixing the problem means that Opencast will not simply accept any self-signed certificates any longer without properly importing them. If you need those, please make sure to import them into the Java key store. Better yet, get a valid certificate.
CVE-2020-5231	Medium	2020-01-30	No exploit published	No public exploit	In Opencast before 7.6 and 8.1, users with the role ROLE_COURSE_ADMIN can use the user-utils endpoint to create new users not including the role ROLE_ADMIN. ROLE_COURSE_ADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code (except for tests) but only in the security configuration. From the name – implying an admin for a specific course – users would never expect that this role allows user creation. This issue is fixed in 7.6 and 8.1 which both ship a new default security configuration.
CVE-2017-1000221	Medium	2017-11-17	No exploit published	No public exploit	In Opencast 2.2.3 and older if user names overlap, the Opencast search service used for publication to the media modules and players will handle the access control incorrectly so that users only need to match part of the user name used for the access restriction. For example, a user with the role ROLE_USER will have access to recordings published only for ROLE_USER_X.

CVE

Severity

Published▾

Status

Exploitation

Description

CVE-2025-61788

Medium

2025-10-08

No exploit published

No public exploit

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.

CVE-2025-54380

Medium

2025-07-26

No exploit published

No public exploit

Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to version 17.6, Opencast would incorrectly send the hashed global system account credentials (ie: org.opencastproject.security.digest.user and org.opencastproject.security.digest.pass) when attempting to fetch mediapackage elements included in a mediapackage XML file. A previous CVE prevented many cases where the credentials were inappropriately sent, but not all. Anyone with ingest permissions could cause Opencast to send its hashed global system account credentials to a url of their choosing. This issue is fixed in Opencast 17.6.

CVE-2025-3986

Medium

2025-04-27

No exploit published

No public exploit

A vulnerability was found in Apereo CAS 5.2.6. It has been declared as problematic. This vulnerability affects unknown code of the file cas-5.2.6\core\cas-server-core-configuration-metadata-repository\src\main\java\org\apereo\cas\metadata\rest\CasConfigurationMetadataServerController.java. The manipulation of the argument Name leads to inefficient regular expression complexity. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVE-2025-3985

Medium

2025-04-27

No exploit published

No public exploit

A vulnerability was found in Apereo CAS 5.2.6. It has been classified as problematic. This affects the function ResponseEntity of the file cas-5.2.6\webapp-mgmt\cas-management-webapp-support\src\main\java\org\apereo\cas\mgmt\services\web\ManageRegisteredServicesMultiActionController.java. The manipulation of the argument Query leads to inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVE-2022-41965

Medium

2022-11-28

No exploit published

No public exploit

Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to Opencast 12.5, Opencast's Paella authentication page could be used to redirect to an arbitrary URL for authenticated users. The vulnerability allows attackers to redirect users to sites outside of one's Opencast install, potentially facilitating phishing attacks or other security issues. This issue is fixed in Opencast 12.5 and newer.

CVE-2022-29237

Medium

2022-05-24

No exploit published

No public exploit

Opencast is a free and open source solution for automated video capture and distribution at scale. Prior to Opencast 10.14 and 11.7, users could pass along URLs for files belonging to organizations other than the user's own, which Opencast would then import into the current organization, bypassing organizational barriers. Attackers must have full access to Opencast's ingest REST interface, and also know internal links to resources in another organization of the same Opencast cluster. Users who do not run a multi-tenant cluster are not affected by this issue. This issue is fixed in Opencast 10.14 and 11.7.

CVE-2021-42567

Medium

2021-12-07

Mitigation candidate

Exploited

Apereo CAS through 6.4.1 allows XSS via POST requests sent to the REST API endpoints.

CVE-2020-26234

Medium

2020-12-08

No exploit published

No public exploit

Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for man-in-the-middle attacks. This problem is fixed in Opencast 7.9 and Opencast 8.8 Please be aware that fixing the problem means that Opencast will not simply accept any self-signed certificates any longer without properly importing them. If you need those, please make sure to import them into the Java key store. Better yet, get a valid certificate.

CVE-2020-5231

Medium

2020-01-30

No exploit published

No public exploit

In Opencast before 7.6 and 8.1, users with the role ROLE_COURSE_ADMIN can use the user-utils endpoint to create new users not including the role ROLE_ADMIN. ROLE_COURSE_ADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code (except for tests) but only in the security configuration. From the name – implying an admin for a specific course – users would never expect that this role allows user creation. This issue is fixed in 7.6 and 8.1 which both ship a new default security configuration.

CVE-2017-1000221

Medium

2017-11-17

No exploit published

No public exploit

In Opencast 2.2.3 and older if user names overlap, the Opencast search service used for publication to the media modules and players will handle the access control incorrectly so that users only need to match part of the user name used for the access restriction. For example, a user with the role ROLE_USER will have access to recordings published only for ROLE_USER_X.