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Description

OpenBullet2 through version 0.3.2 contains a path traversal vulnerability in the wordlist endpoint that allows authenticated attackers to perform arbitrary file read, write, and delete operations by supplying unsanitized absolute paths to the upload handler and wordlist functions. Attackers can chain the file write and delete primitives to achieve remote code execution by manipulating critical system files such as /etc/passwd, with full system impact since the application runs as root by default.

PUBLISHED Reserved 2026-02-02 | Published 2026-06-08 | Updated 2026-06-09 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Default status
affected

Any version
affected

Credits

Maksim Rogov finder

VulnCheck finder

References

hackernoon.com/...dmin-how-an-auth-bypass-breaks-openbullet2 technical-description exploit

www.vulncheck.com/...t2-path-traversal-via-wordlist-endpoint third-party-advisory

cve.org (CVE-2026-25559)

nvd.nist.gov (CVE-2026-25559)

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