CVE-2026-71247 Documenso - Assistant Recipient Can Forge Another Signer's Signature in Sequential-Signing Documents
An assistant recipient can forge signatures for other signers in sequential documents due to missing authorization checks in the V1 signing path.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-71247?
CVE-2026-71247 is a medium-severity missing authorization vulnerability in documenso, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Documenso's sign-field-with-token.ts, used by the live document-signing UI, allows a recipient with the ASSISTANT role to fetch and complete fields belonging to any later-or-equal-order, not-yet-signed recipient in the same envelope, with no restriction on field type. A newer V2 signing path (sign-envelope-field.ts) explicitly blocks assistants from completing SIGNATURE fields, and the project's own test suite comments confirm this guard is absent from the V1 path used here.
Weakness: CWE-863
Which versions are affected by CVE-2026-71247?
How do I fix CVE-2026-71247?
No fix has been published for CVE-2026-71247 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-2026-71247 being exploited?
There is no known exploitation of CVE-2026-71247 in the wild and no public exploit code.
Sources
Also known as GHSA-v65x-57rf-cpg3.