CVE-2026-44595

CVE-2026-44595 — YAMCS Unauthorized User Enumeration via IAM API Summary The IAM API endpoints listUsers, getUser, listGroups, getGroup in yamcs-core do not enforce the required SystemPrivilege.ControlAccess check. Any authenticated user — even one with no privileges — can enumerate all user...

CVE-2026-44596

CVE-2026-44596 — YAMCS No Rate Limiting on Authentication Endpoint Summary The authentication endpoint POST /auth/token in yamcs-core lacks any form of rate limiting, account lockout, or failed attempt throttling. An unauthenticated remote attacker can perform unlimited password guessing attempts...

GHSA-962X-CCWF-8X6P Yamcs Core API has Multiple Missing Function Level Access Control vulnerabilities

Summary Multiple Missing Function Level Access Control vulnerabilities exist in the Yamcs Core API. These vulnerabilities allow any authenticated user, regardless of their assigned roles or privileges e.g., an unprivileged "Guest", to bypass intended access controls. An attacker can exploit these...

Yamcs Core API has Multiple Missing Function Level Access Control vulnerabilities

Summary Multiple Missing Function Level Access Control vulnerabilities exist in the Yamcs Core API. These vulnerabilities allow any authenticated user, regardless of their assigned roles or privileges e.g., an unprivileged "Guest", to bypass intended access controls. An attacker can exploit these...

EUVD-2026-67838

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits authorization checks in IndexesApi.listPacketIndex, IndexesApi.listEventIndex, Cop1Api.disable, Cop1Api.resume, Cop1Api.initialize, Cop1Api.updateConfig, and TimeApi.setTime. An authenticated low-privilege user can read...

CVE-2026-55521 Yamcs : Multiple Missing Function Level Access Control vulnerabilities in Yamcs Core API

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs omits authorization checks in IndexesApi.listPacketIndex, IndexesApi.listEventIndex, Cop1Api.disable, Cop1Api.resume, Cop1Api.initialize, Cop1Api.updateConfig, and TimeApi.setTime. An authenticated low-privilege user can read...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection in the executeSql process. An attacker can execute arbitrary code with the privileges of the server process by injecting malicious Java code into a column name, which is then compiled and executed by the...

CVE-2026-44596

Summary (CVE-2026-44596) Yamcs’ authentication endpoint POST /auth/token (in yamcs-core) lacked rate limiting, account lockout, and throttling for failed attempts prior to v5.12.7. An unauthenticated remote attacker could perform unlimited password-guessing against any user account, enabling brut...

PT-2026-60503

Name of the Vulnerable Software and Affected Versions Yamcs versions prior to 5.12.8 Yamcs versions prior to 5.13.2 Description The PacketsApi.exportPackets endpoint in yamcs-core/src/main/java/org/yamcs/http/api/PacketsApi.java fails to enforce object-level ReadPacket privileges when a request...

YAMCS yamcs-core 5.12.7 - No Rate Limiting

Exploit Title: YAMCS yamcs-core 5.12.7 - No Rate Limiting Date: 2026-05-27 Exploit Author: Daniel Miranda Barcelona Excal1bur Vendor Homepage: https://yamcs.org Software Link: https://github.com/yamcs/yamcs Version: 5.12.7 Tested on: Linux CVE: CVE-2026-44596 Category: Remote / Brute Force...

YAMCS yamcs-core 5.12.7 - User Enumeration

Exploit Title: YAMCS yamcs-core 1 else "http://localhost:8090" username = sys.argv2 if lensys.argv 2 else "testuser" password = sys.argv3 if lensys.argv 3 else "test" base = target.rstrip"/" print"=" 65 print" CVE-2026-44595 — YAMCS IAM User Enumeration PoC" printf" Target: target" printf"...

Exploit for CVE-2026-42568

CVE-2026-42568 — YAMCS LDAP Injection in LdapAuthModule Su...

Exploit for CVE-2026-44595

CVE-2026-44595 — YAMCS Unauthorized User Enumeration via IAM A...

Exploit for CVE-2026-44596

CVE-2026-44596 — YAMCS No Rate Limiting on Authentication Endp...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection via the dynamic evaluation of user-supplied algorithm code in the script evaluation engine. An attacker can execute arbitrary operating system commands by injecting malicious Jython code through the REST API whe...

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

Overview Affected versions of this package are vulnerable to Use of Externally-Controlled Input to Select Classes or Code 'Unsafe Reflection' via the updateAlgorithm process. An attacker can execute arbitrary code on the server by supplying crafted JavaScript payloads that are evaluated without...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection in the JavaExprAlgorithmExecutionFactory process. An attacker can execute arbitrary code on the underlying operating system by injecting malicious Java expressions through the REST API when authenticated with th...

GHSA-W5R6-MCGQ-7PQ4 Yamcs has No Rate Limiting on Authentication Endpoint

Summary The authentication endpoint POST /auth/token in yamcs-core lacks any form of rate limiting, account lockout, or failed attempt throttling. As a result, an unauthenticated remote attacker can perform unlimited password guessing attempts against any user account. This missing rate limiting...

Brute Force

Overview Affected versions of this package are vulnerable to Brute Force through the handleToken process. An attacker can gain unauthorized access to user accounts by performing unlimited authentication attempts without restriction. PoC 20 attempts — zero rate limiting for i in $seq 1 20; do curl...

Yamcs has No Rate Limiting on Authentication Endpoint

Summary The authentication endpoint POST /auth/token in yamcs-core lacks any form of rate limiting, account lockout, or failed attempt throttling. As a result, an unauthenticated remote attacker can perform unlimited password guessing attempts against any user account. This missing rate limiting...