CVE-2026-22102CWE-20

Arbitrary file overwrite through certificate update functionality

Critical · published July 13, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
44.1
In the wild
Unconfirmed
What it is

A POST request sent to a specific webserver endpoint can be used to write to arbitrary file locations. The endpoint accepts the filename parameter in the Content-Disposition header without verification.

This can be used to cause a denial of service by overwriting system files, or remote-code-execution by overwriting shell-scripts which execution can be triggered through other means.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00531 · 44.1th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-07-13T09:10Z
EPSS history
Timeline
  • 13 JUL 09:10Z
    Arbitrary file overwrite through certificate update functionality
    cvelistv5