PT-2026-88953 · Git+1 · Siyuan

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CVE-2026-87815

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Published

2026-09-09

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Updated

2026-09-09

CVSS v3.1

8.7

High

VectorAV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
SiYuan versions before v3.8.2 contain a path traversal vulnerability in the /api/riff/removeRiffDeck endpoint that fails to validate the deckID parameter. An authenticated administrator can supply path traversal sequences to delete arbitrary .deck and .cards files outside the workspace directory.

Exploit

Fix

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Weakness Enumeration

Related Identifiers

CVE-2026-87815
GHSA-94VH-RPGR-RPWC

Affected Products

Siyuan