CVE-2026-108158: plugNmeet Server through 2.5.2 Path Traversal via /api/whiteboard/convert

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-09 · updated 2026-10-14
Weakness: CWE-22

Description

plugNmeet Server through 2.5.2 contains a path traversal vulnerability in the whiteboard conversion endpoint that allows any meeting participant to read server files via crafted filePath values. Attackers can supply ../ sequences so text or office documents are converted into page images, then fetch them unauthenticated through /download/uploadedFile/.

Affected products

mynaparrot plugNmeet-server: through 2.5.2

References

https://github.com/mynaparrot/plugNmeet-server
https://github.com/mynaparrot/plugNmeet-server/blob/961b4b01cdff655928fb4b4d50524b42a6b63ec1/pkg/models/file_convert.go#L143
https://hackmd.io/@haind/cve-2026-108158-plugnmeet-whiteboard-path-traversal
https://www.vulncheck.com/advisories/plugnmeet-server-through-2.5.2-path-traversal-via-api-whiteboard-convert

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