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TI-2026-86071 Aliases CVE-2026-123357

OS command injection in GROBID through crafted PDF filenames

Priority LOW 8CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

GROBID, machine learning software for extracting information from scholarly documents, is affected before 0.9.1. On the Linux non-server PDF conversion path, a PDF filename that an attacker can influence is interpolated into a bash -c command string through DocumentSource.pdfalto, and a single quote in the filename can break the intended quoting. This is an OS command injection flaw (CWE-78) that allows arbitrary commands to run with GROBID process privileges. The bundled REST server path is not affected.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

GROBID is machine learning software for extracting information from scholarly documents. Prior to 0.9.1, the Linux non-server PDF conversion path in grobid-core/src/main/java/org/grobid/core/document/DocumentSource.java passes an attacker-influenced PDF filename through DocumentSource.pdfalto, which interpolates the path into a bash -c command string. A single quote in the filename can terminate the intended quoting, and ProcessRunner.run in grobid-core/src/main/java/org/grobid/core/process/ProcessRunner.java starts the resulting command through ProcessBuilder, allowing arbitrary commands to execute with GROBID process privileges. The bundled REST server path is not affected. This issue is fixed in version 0.9.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00261 17th percentileScored 2026-11-07
Fix Fixed grobid (grobidOrg): 0.9.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
grobidOrggrobidbefore 0.9.10.9.1Patch availableCNA
  • grobid VendorgrobidOrg Affected before 0.9.1 Fixed in 0.9.1 Patch available CNA

Remediation

Update GROBID to version 0.9.1, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA grobid (grobidOrg) Fixed in 0.9.1

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-123357
  2. 2026-11-07 CISA SSVC decision points changed

References

Other 3

  • TI-2026-86070 Unbounded thread pool creation in GROBID model training endpoint CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences