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TI-2026-20899 Aliases CVE-2026-25855GHSA-5jmp-7g8v-5p3h

OpenBullet2 0.3.2 Authenticated RCE via FileProxySource Script Upload

Priority HIGH 73CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

OpenBullet2 through version 0.3.2 contains a remote code execution vulnerability that allows authenticated users to execute arbitrary commands by uploading script files (.bat.ps1.sh) through the FileProxySource proxy loading feature. Attackers can upload malicious script files as proxy sources, causing the server to execute the scripts and return output as proxy lines, resulting in arbitrary command execution on the host as the process user.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0057 47th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
openbulletopenbullet20.2.5 – 0.3.2—No fix listedCNA
  • openbullet2 Vendoropenbullet Affected 0.2.5 – 0.3.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25855
  2. 2026-10-03 Alias added: GHSA-5jmp-7g8v-5p3h
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 1

  • TI-2026-20662 OpenBullet2 0.3.2 Authentication Bypass via X-Api-Key Header CVSS 4.0CRITICAL 9.3
  • TI-2026-20900 OpenBullet2 0.3.2 Authenticated RCE via Job Configuration Interface CVSS 4.0HIGH 8.7
  • TI-2026-20666 OpenBullet2 0.3.2 Path Traversal via Wordlist Endpoint CVSS 4.0HIGH 8.7
  • TI-2026-28781 OpenBullet2 0.3.2 NTLMv2 Hash Disclosure via UNC Path Proxy Source CVSS 4.0HIGH 7.1

Sources

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