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CVE-2026-72544

OpenSignLabs OpenSign - Insufficient Verification of Data Authenticity

HIGH
7.5
CVSS Score
Published: August 11, 2026 at 11:09 AM UTC
Updated: October 24, 2026 at 03:10 PM UTC
1 product affected across 1 vendorOpenSign

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Severity
HIGH7.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

An integrity verification vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to forge document audit-trail entries via the triggerevent Parse cloud function. The function accepts viewer identity and IP address as caller-supplied parameters without authentication, allowing fabrication of arbitrary audit log entries. An attacker can tamper with the legal audit trail of any signed document, undermining non-repudiation.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

OpenSign· Opensignlabs
90%
0 ≤ v ≤ 2.37.00

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://github.com/OpenSignLabs/OpenSign

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHTuranSec
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-345

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