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Description

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.

PUBLISHED Reserved 2026-01-06 | Published 2026-07-13 | Updated 2026-07-13 | Assigner DIVD




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-20 Improper Input Validation

Product status

Default status
unaffected

Any version before 1.5.1
affected

Credits

Wilco van Beijnum (ElaadNL) finder

Jeroen van der Ham-de Vos (DIVD) analyst

References

csirt.divd.nl/DIVD-2026-00001/ third-party-advisory

cve.org (CVE-2026-22102)

nvd.nist.gov (CVE-2026-22102)

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