CVE-2026-36829

An authentication bypass vulnerability exists in the embedded HTTP server of Panabit PAP-XM320 up to and including v7.7

Critical · published May 19, 2026

CVSS v3.1
9.8
EPSS
2%
Percentile
74.3
In the wild
Unconfirmed
What it is

An authentication bypass vulnerability exists in the embedded HTTP server of Panabit PAP-XM320 up to and including v7.7. The server validates session cookies using a filesystem existence check based on a user-controlled cookie value without proper sanitization, allowing directory traversal and bypass of authentication.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01516 · 74.3th percentile
Published
2026-05-19T00:00Z
EPSS history
Timeline
  • 19 MAY 00:00Z
    An authentication bypass vulnerability exists in the embedded HTTP server of Panabit PAP-XM320 up to and including v7.7
    cvelistv5