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Medium Yamcs CVEs with a working exploit

3 CVEs

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Product yamcs✕
Overview 3 matches · 0 protected · 0 exploited · 0 CISA KEV · 0 EPSS ≥ 0.5
3matches 0protected0.0% 0exploited0.0% 0CISA KEV0.0% 0EPSS ≥ 0.50.0%
Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 3 100.0% No exploit published 0 0.0%
Critical 0 0.0% High 0 0.0% Medium 3 100.0% 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 3 100.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 3 100.0% Proof of concept only 0 0.0% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 1 / month
Mitigation candidate: 3 Medium: 3 not blocked: 3 Working exploit published: 3
Jun 261 Mitigation candidate1 Medium1 not blocked1 Working exploit published1 Jul 261 Mitigation candidate1 Medium1 not blocked1 Working exploit published1 Aug 261 Mitigation candidate1 Medium1 not blocked1 Working exploit published1
Jun 26Jul 26Aug 26
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CVE Severity Published▾ Status Exploitation Description
CVE-2026-55549 Medium 2026-08-28 Mitigation candidate Working exploit published Yamcs is a mission control framework. Prior to 5.9.4, Yamcs reflects an attacker-controlled redirect_uri parameter from GET /auth/authorize into yamcs-core/src/main/resources/auth/templates/authorize.html without adequate HTML escaping by yamcs-core/src/main/java/org/yamcs/http/auth/AuthHandler.java and yamcs-core/src/main/java/org/yamcs/http/HandlerContext.java. A crafted authorization URL can execute JavaScript when opened by a Yamcs user. The script can access browser-held authentication material and transmit it to an attacker, enabling account compromise. This issue is fixed in version 5.9.4.
CVE-2026-44595 Medium 2026-07-16 Mitigation candidate Working exploit published Yamcs is a mission control framework. Prior to 5.12.7, the IAM API endpoints listUsers, getUser, listGroups, and getGroup in yamcs-core did not enforce the required SystemPrivilege.ControlAccess check in yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java, so any authenticated user, even one with low or no privileges, could enumerate all user accounts in the system including their usernames, superuser status, and group memberships. This issue is fixed in versions 5.12.7 and 5.13.0.
CVE-2026-42568 Medium 2026-06-10 Mitigation candidate Working exploit published Yamcs is a mission control framework. Prior to versions 5.13.0 and 5.12.7, an LDAP injection vulnerability exists in `org.yamcs.security.LdapAuthModule` when constructing search filters. The username parameter is inserted directly into the LDAP filter without proper RFC 4515 escaping. Versions 5.13.0 and 5.12.7 patch the issue.