CVE-2026-28410: The Graph: Revocable vesting contracts allows early access to locked tokens

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-05 · updated 2026-06-17
Weakness: CWE-284

Description

The Graph is an indexing protocol for querying networks like Ethereum, IPFS, Polygon, and other blockchains. Prior to version 3.0.0, a flaw in the token vesting contracts allows users to access tokens that should still be locked according to their vesting schedule. This issue has been patched in version 3.0.0.

Affected products

graphprotocol contracts: before 3.0.0 — fixed in 3.0.0

How to fix

Upgrade to a fixed version: graphprotocol contracts 3.0.0. Check the vendor advisory for mitigations.

References

https://github.com/graphprotocol/contracts/commit/91224ed83eeff3fc3afea01f5ed269373d9bf773
https://github.com/graphprotocol/contracts/security/advisories/GHSA-qx35-rc5x-x39r

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