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CVE-2026-44632— Yamcs: Server-Side Code Injection (RCE) via Janino Expression Engine in `JavaExprAlgorithmExecutionFactory`

Quick assessment

Affected
yamcs yamcs
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Yamcs yamcs是Yamcs团队的航天器遥测数据处理与监控系统。 Yamcs 5.12.7之前版本存在代码注入漏洞，该漏洞源于算法评估引擎中未强制安全沙箱，动态编译和评估用户控制的算法文本，使经过身份验证并拥有ChangeMissionDatabase权限的用户可通过任务数据库REST API覆盖现有算法文本并注入Java代码，可能导致远程代码执行。

CVSS 9.1 · Critical EPSS 1.12% · P65

Affected Version Matrix 1

VendorProduct Version RangeStatus
yamcs yamcs < 5.12.7 affected
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I. Basic Information for CVE-2026-44632

Vulnerability Information
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Vulnerability Title
Yamcs: Server-Side Code Injection (RCE) via Janino Expression Engine in `JavaExprAlgorithmExecutionFactory`
Source: CVE Program / CVE List V5
Vulnerability Description
Yamcs is a mission control framework. Prior to 5.12.7, a server-side code injection vulnerability existed in the Yamcs algorithm evaluation engine org.yamcs.algorithms.JavaExprAlgorithmExecutionFactory, which dynamically compiled and evaluated user-controlled algorithm text through the Janino compiler without enforcing a secure sandbox, so an authenticated user with the ChangeMissionDatabase privilege could override an existing algorithm's text via the mission database REST API and inject Java code (for example using java.lang.Runtime) to achieve remote code execution on the underlying host operating system. This issue is fixed in versions 5.12.7 and 5.13.0, which disable algorithm editing by default.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Yamcs 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Yamcs yamcs是Yamcs团队的航天器遥测数据处理与监控系统。 Yamcs 5.12.7之前版本存在代码注入漏洞，该漏洞源于算法评估引擎中未强制安全沙箱，动态编译和评估用户控制的算法文本，使经过身份验证并拥有ChangeMissionDatabase权限的用户可通过任务数据库REST API覆盖现有算法文本并注入Java代码，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
yamcs yamcs < 5.12.7 -

II. Public POCs for CVE-2026-44632

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7273 chars
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III. Intelligence Information for CVE-2026-44632

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Patches & Fixes for CVE-2026-44632 (2)

Vendor Advisories for CVE-2026-44632 (1)

Vendor Pages for CVE-2026-44632 (2)

Same Patch Batch · yamcs · 2026-07-16 · 6 CVEs total

CVE-2026-46562 9.8 CRITICAL Yamcs: Remote Code Execution via Mission Database algorithm override
CVE-2026-46621 9.1 CRITICAL Yamcs: Authenticated Remote Code Execution (RCE) via Jython Algorithm Code Injection
CVE-2026-44596 6.5 MEDIUM Yamcs: No Rate Limiting on Authentication Endpoint
CVE-2026-44595 4.3 MEDIUM Yamcs: Unauthorized user enumeration via IAM API endpoints
CVE-2026-55548 4.3 MEDIUM Yamcs: Insecure Direct Object Reference (IDOR) in PacketsApi allows unprivileged users to

IV. Related Vulnerabilities

Same product: yamcs
Same vendor: yamcs
Same weakness: CWE-94

V. Comments for CVE-2026-44632

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