Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Yamcs (org.yamcs:yamcs-core) versions before 5.12.7 are affected by an LDAP injection flaw in LdapAuthModule, where the username is placed into an LDAP search filter without escaping. An attacker who already knows a valid password can supply a wildcard username to log in as another account returned by the search, such as the first user found. Upgrade to version 5.12.7 or later. The source gives few details on exact preconditions beyond deployments using LdapAuthModule in their security configuration.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.3 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.010, the 63rd percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:20 UTC First seen by agentprime
- 31 Oct 2026, 14:20 UTC Confirmed by OSV