CVE-2024-22192Network attack vector

Holder tracking via reusable non-revocation proof value

Published Jan 16, 2024 · Updated Jun 16, 2025

Privacy weakness in Hyperledger Ursa 0.3.7 and earlier allows remote attackers to identify credential holders via non-revocation proofs. The CL-Signatures prover encodes a separate m2 value derived from the credential context in each proof, so repeated presentations expose a stable link. A holder must present a credential with a non-revocation proof to a malicious verifier; integrity and availability are unaffected.

CVSS severity6.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Privacy weakness in Hyperledger Ursa 0.3.7 and earlier allows remote attackers to identify credential holders via non-revocation proofs. The CL-Signatures prover encodes a separate m2 value derived from the credential context in each proof, so repeated presentations expose a stable link. A holder must present a credential with a non-revocation proof to a malicious verifier; integrity and availability are unaffected.

The record

CVE
CVE-2024-22192
Published
Jan 16, 2024
Updated
Jun 16, 2025
Vendor
Hyperledger Foundation
Product
Hyperledger Ursa
Classifications
CWE-327
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 0.3.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hyperledger Foundation · Hyperledger Ursaversion=<= 0.3.7

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo