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TI-2026-50930 Aliases CVE-2026-72692GHSA-fm8m-9x77-qjvw

OpenSignLabs opensignserver - Missing Authorization

Priority LOW 39CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

A missing authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to irreversibly decline any in-flight document and forge the decline attribution to an arbitrary user via the declinedoc Parse cloud function. The function writes IsDeclined, DeclineReason, and a caller-supplied DeclineBy pointer without verifying the caller's identity, enabling workflow termination and evidentiary record falsification against any accessible document.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00436 38th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenSignLabsopensignserverup to 2.37.0—No fix listedCNA
  • opensignserver VendorOpenSignLabs Affected up to 2.37.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-72692
  2. 2026-10-03 Alias added: GHSA-fm8m-9x77-qjvw

References

Advisory 1

  • TI-2026-62535 OpenSign through 2.41.3 Information Disclosure via getDocument CVSS 4.0HIGH 8.7
  • TI-2026-50929 OpenSignLabs opensignserver - Authentication Bypass CVSS 3.1HIGH 7.5
  • TI-2026-50926 OpenSignLabs opensignserver - Missing Authentication for Critical Function CVSS 3.1HIGH 7.5
  • TI-2026-50807 OpenSignLabs OpenSign - Information Disclosure CVSS 3.1HIGH 7.5
  • TI-2026-50804 OpenSignLabs OpenSign - Insecure Direct Object Reference CVSS 3.1HIGH 7.5
  • TI-2026-50802 OpenSignLabs OpenSign - Insecure Direct Object Reference CVSS 3.1HIGH 7.5
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences