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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-72688

OpenSignLabs opensignserver - Missing Authentication for Critical Function

Description

A missing authentication vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read arbitrary stored documents via the fileupload Parse cloud function. The function mints MASTER_KEY-signed file access tokens for any caller-supplied URL without performing any session check, defeating the only access control protecting stored contract files.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

OpenSignLabs opensignserver

Default version status: affected

  • 0 to ≤ 2.37.0affected

References