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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXhtaDktcmc2Zi1qM21y

Verification flaw in Solid identity-token-verifier



Any Pod on a Solid server using a vulnerable version of the identity-token-verifier library is at risk of a spoofed Demonstration of Proof-of-Possession (DPoP) token binding. This vulnerability could give total and complete access to a targeted Pod.


A verification flaw in the implementation of the identity token verifier library ( allows DPoP proofs to be spoofed.

DPoP proofs are used to bind access tokens to a private key meant to be in sole possession of a specific user. Instead of verifying against the hash of an embedded public key, the library instead verifies against a field that an attacker can modify to spoof another user’s DPoP.

A stolen DPoP proof, when used in the right context, therefore allows the rebinding of a DPoP-bound access token. Any attacker in possession of a targeted access token could build an attack environment to replay it on any Pod service with this vulnerability.


A new version 0.5.2 of identity-token-verifier fixes the verification:




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Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 2 years ago
Updated: 11 months ago

Identifiers: GHSA-xmh9-rg6f-j3mr

Affected Packages

Versions: < 0.5.2
Fixed in: 0.5.2