VulnSocial

CVE-2026-72688Disclosure

LOWCVSS 7.5 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-306

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-12: 1Technical Details · 2026-08-12: 108-12
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Cyber Threat Observatory | Alan Turing Institute@TuringCyberObs
    Disclosure

    CVE-2026-72688 OpenSign Missing authentication could let attackers generate privileged file-access tokens and read stored documents in affected e-signature deployments Full analysis: https://github.com/alan-turing-institute/cyber-threat-observatory/blob/main/reports/2026-08-10/TIER_2_CVE-2026-72688.md #CyberSecurity #DataSecurity #VulnerabilityManagement

    Post summary

    The report highlights an authentication bypass in OpenSign (CVE‑2026‑72688) that permits attackers to craft privileged access tokens and read stored documents, but no evidence of active exploitation, patch, or PoC is provided.

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    59 followersView on X

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