Vulnerability · Published Jun 10, 2026 · Assigned by GitHub_M

CVE-2026-42568Yamcs Vulnerable to LDAP Injection in LdapAuthModule

Medium 4.3

In plain English

A medium-severity security flaw in yamcs from yamcs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)1.0%top 36.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Public PoC

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.yamcs:yamcs-core	5.12.7	GHSA-cqh3-jg8p-336j

Affected products (as reported)

Vendor	Product	Versions
yamcs	yamcs	< 5.12.7

Weakness: CWE-90 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/yamcs/yamcs/security/advisories/GHSA-cqh3-jg8p-336j x_refsource_CONFIRM
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.7 x_refsource_MISC
https://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.0 x_refsource_MISC