What’s Vulnerable › Vulnerabilities

CVE-2026-72689: OpenSignLabs opensignserver - Broken Object Level Authorization

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-10 · updated 2026-10-24
• Weakness: CWE-639

Description

A broken object-level authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read complete contract records via the getDocument Parse cloud function. The function fetches documents using useMasterKey, bypassing the object ACL, and returns full records including sender and signer PII and a pre-signed document download URL whenever the document's IsEnableOTP flag is unset, which is the default configuration.

Affected products

• OpenSignLabs opensignserver: through 2.37.0

References

• https://github.com/OpenSignLabs/OpenSign

Get alerted when CVE-2026-72689 or the next vulnerability affects your stack