{"schemaVersion":3,"id":"CVE-2024-22192","aliases":["GHSA-6698-mhxx-r84g"],"status":"published","duplicateOf":null,"title":null,"description":"Ursa is a cryptographic library for use with blockchains. The revocation scheme that is part of the Ursa CL-Signatures implementations has a flaw that could impact the privacy guarantees defined by the AnonCreds verifiable credential model. Notably, a malicious verifier may be able to generate a unique identifier for a holder providing a verifiable presentation that includes a Non-Revocation proof. The impact of the flaw is that a malicious verifier may be able to determine a unique identifier for a holder presenting a Non-Revocation proof. Ursa has moved to end-of-life status and no fix is expected.","dates":{"published":"2024-01-16T21:44:53.121Z","modified":"2025-06-16T19:46:20.983Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Crates.io","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00317,"percentile":0.23133,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00317},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00317,"percentile":0.23133}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00317,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00317,"percentile":0.23133}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-327","name":"Use of a Broken or Risky Cryptographic Algorithm","description":"The product uses a broken or risky cryptographic algorithm or protocol.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/327.html"}],"affected":[{"vendor":"Crates.Io","product":"anoncreds-clsignatures","name":"anoncreds-clsignatures","label":"anoncreds-clsignatures","ecosystem":"Crates.Io","cpePart":null,"purl":"pkg:cargo/anoncreds-clsignatures","purlType":"cargo","versions":[{"text":"< 0.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.1.0","eol":null,"hubHref":null},{"vendor":"Crates.Io","product":"ursa","name":"ursa","label":"ursa","ecosystem":"Crates.Io","cpePart":null,"purl":"pkg:cargo/ursa","purlType":"cargo","versions":[{"text":"≤ 0.3.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 0.3.7","eol":null,"hubHref":null},{"vendor":"hyperledger-archives","product":"ursa","name":"ursa","label":"ursa","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 0.3.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 0.3.7","eol":null,"hubHref":"/vendor/hyperledger-archives/ursa"},{"vendor":"hyperledger","product":"ursa","name":"ursa","label":"ursa","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"0.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"0.1.0","eol":null,"hubHref":"/vendor/hyperledger/ursa"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/hyperledger-archives/ursa/security/advisories/GHSA-6698-mhxx-r84g","label":"github.com/hyperledger-archives/ursa/security/advisories/GHSA-6698-mhxx-r84g","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-22192","label":"nvd.nist.gov/vuln/detail/CVE-2024-22192","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/hyperledger/anoncreds-clsignatures-rs/commit/1e55780c890b027fa51e361e188a7743a0bf473f","label":"github.com/hyperledger/anoncreds-clsignatures-rs/commit/1e55780c890b027fa51e361e188a7743a0bf473f","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/hyperledger-archives/ursa","label":"github.com/hyperledger-archives/ursa","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2024-01-16T21:44:53.121Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-06-16T19:46:20.983Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T03:39:23.060Z","stale":false,"partial":false}}