CVE-2026-72692 OpenSignLabs opensignserver - Missing Authorization
Unauthenticated attackers can irreversibly decline documents and forge decline attribution in OpenSignLabs opensignserver, compromising workflow integrity and evidentiary records.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-72692?
CVE-2026-72692 is a high-severity missing authorization vulnerability in OpenSignLabs opensignserver, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-72692?
How do I fix CVE-2026-72692?
No fix has been published for CVE-2026-72692 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-72692 being exploited?
There is no known exploitation of CVE-2026-72692 in the wild and no public exploit code.
Sources
Also known as GHSA-fm8m-9x77-qjvw.