Resource exhaustion in Grobidorg Grobid
CVE-2026-123356
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.
Vulnerability class: DoS (Denial of Service)
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Grobidorg Grobid — versions < 0.9.1
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-123356?
- CVE-2026-123356 is a high-severity vulnerability in Grobidorg Grobid, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-11-06.
- How severe is CVE-2026-123356?
- High severity. CVSS v3 base score is 7.5 out of 10.