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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-44632

38
FAUCET Score

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.

First published: Jul 16, 2026Last modified: Jul 16, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 5.12.7CPE matchmatch criteria
cpe:2.3:a:spaceapplications:yamcs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.17%
Probability of exploitation in next 30 days
EPSS Percentile
64.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0117 is in the 62nd percentile among its peer group of 462 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.7 Bluesky, 0.4 Mastodon, and 1.7 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: org.yamcs:yamcs-coreFixed in: 5.12.7

Vendor Advisories (1)

mavenGHSA-524g-x36v-9wm6critical

Yamcs Vulnerable to Server-Side Code Injection (RCE) via Janino Expression Engine in `JavaExprAlgorithmExecutionFactory`

May 27, 2026

References

github.com / yamcs/yamcs/commit/3c550348f866af4675d2ba4a51d8d12b7c7c6011
Patch
github.com / yamcs/yamcs/commit/4ff8fda642ea8c3309a4d3f379aa77b763148992
Patch
github.com / yamcs/yamcs/releases/tag/yamcs-5.12.7
Release Notes
github.com / yamcs/yamcs/releases/tag/yamcs-5.13.0
Release Notes
github.com / yamcs/yamcs/security/advisories/GHSA-524g-x36v-9wm6
ExploitVendor Advisory