CVE-2026-123356

HIGH 7.5

GROBID: Unauthenticated `/api/modelTraining` Endpoint Allows Unbounded Thread Pool Creation (DoS)

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

GROBID is machine learning software for extracting information from scholarly documents. Prior to 0.9.1, the unauthenticated /api/modelTraining endpoint calls GrobidRestProcessTraining.trainModel in GrobidRestProcessTraining.java, where each request creates Executors.newFixedThreadPool(1), submits a training task, and leaves the executor running. Repeated requests permanently retain JVM worker threads and can exhaust process or operating-system thread capacity, degrading or stopping request processing. This issue is fixed in version 0.9.1.

CWE	CWE-400
Vendor	grobidorg
Product	grobid
Published	Nov 6, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

grobidOrg / grobid

< 0.9.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/grobidOrg/grobid/security/advisories/GHSA-g2r5-4c8r-c84f github.com: https://github.com/grobidOrg/grobid/pull/1477 github.com: https://github.com/grobidOrg/grobid/commit/3227e9a6a990ec1687173045f119c24e17d10103 github.com: https://github.com/grobidOrg/grobid/releases/tag/0.9.1