CVE-2024-21670

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2024-01-16. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fixed version is listed under Patch Availability — apply it.

Ursa is a cryptographic library for use with blockchains. The revocation schema 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, allowing a malicious holder of a revoked credential to generate a valid Non-Revocation Proof for that credential as part of an AnonCreds presentation. A verifier may verify a credential from a holder as being "not revoked" when in fact, the holder's credential has been revoked. Ursa has moved to end-of-life status and no fix is expected.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fixed version is listed under Patch Availability. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
18th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fixed version is listed under Patch Availability. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

January 16, 2024

Last Modified

November 21, 2024

References (2)

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
rustanoncreds-clsignatures—ghsa
rustursa—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 1 ecosystem)
crates.io(2)
PackageVulnerable rangeFix by version rangeDependents
anoncreds-clsignatures—
  • every version on: no fix on record
—
ursa—
  • every version through 0.3.7: no fix on record
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 181 total refreshes for this CVE.

  1. 2026-10-10 19:58 UTCEPSS rescore
  2. 2026-10-09 20:05 UTCEPSS rescore
  3. 2026-10-08 17:07 UTCEPSS rescore
  4. 2026-10-07 23:46 UTCEPSS rescore
  5. 2026-10-06 15:15 UTCEPSS rescore
  6. 2026-10-05 17:41 UTCEPSS rescore
  7. 2026-10-04 23:20 UTCEPSS rescore
  8. 2026-10-03 14:23 UTCEPSS rescore
  9. 2026-10-01 19:48 UTCEPSS rescore
  10. 2026-09-30 16:56 UTCEG score recompute
  11. 2026-09-30 15:01 UTCEPSS rescore
  12. 2026-09-29 15:17 UTCEPSS rescore
  13. 2026-09-28 13:49 UTCEPSS rescore
  14. 2026-09-24 14:01 UTCEPSS rescore
  15. 2026-09-23 13:46 UTCEPSS rescore
  16. 2026-09-23 13:46 UTCEPSS rescore
  17. 2026-09-22 10:45 UTCOSV refresh
  18. 2026-09-20 20:14 UTCEPSS rescore
  19. 2026-09-16 14:06 UTCEPSS rescore
  20. 2026-09-16 05:11 UTCEPSS rescore
  21. 2026-09-15 03:08 UTCEPSS rescore
  22. 2026-09-13 16:45 UTCEPSS rescore
  23. 2026-09-12 14:59 UTCEPSS rescore
  24. 2026-09-11 14:51 UTCEPSS rescore
  25. 2026-09-11 09:34 UTCEPSS rescore
Show 75 more
  1. 2026-09-08 21:58 UTCEPSS rescore
  2. 2026-09-07 15:59 UTCEPSS rescore
  3. 2026-09-06 13:46 UTCEPSS rescore
  4. 2026-09-05 15:26 UTCEPSS rescore
  5. 2026-09-04 13:58 UTCEPSS rescore
  6. 2026-09-04 05:05 UTCEPSS rescore
  7. 2026-09-03 07:30 UTCOSV refresh
  8. 2026-09-02 14:10 UTCEPSS rescore
  9. 2026-09-01 13:52 UTCEPSS rescore
  10. 2026-08-30 19:15 UTCEPSS rescore
  11. 2026-08-30 01:20 UTCEPSS rescore
  12. 2026-08-28 21:39 UTCEPSS rescore
  13. 2026-08-26 14:44 UTCEPSS rescore
  14. 2026-08-25 13:47 UTCEPSS rescore
  15. 2026-08-23 00:17 UTCEPSS rescore
  16. 2026-08-21 23:47 UTCEPSS rescore
  17. 2026-08-20 22:53 UTCEPSS rescore
  18. 2026-08-19 17:02 UTCEPSS rescore
  19. 2026-08-18 13:46 UTCEPSS rescore
  20. 2026-08-17 13:45 UTCEPSS rescore
  21. 2026-08-16 20:56 UTCOSV refresh
  22. 2026-08-16 14:54 UTCEPSS rescore
  23. 2026-08-16 14:54 UTCEPSS rescore
  24. 2026-08-16 02:12 UTCEPSS rescore
  25. 2026-08-15 01:28 UTCEPSS rescore
  26. 2026-08-13 21:58 UTCEPSS rescore
  27. 2026-08-12 13:49 UTCEPSS rescore
  28. 2026-08-11 13:40 UTCEPSS rescore
  29. 2026-08-09 13:45 UTCEPSS rescore
  30. 2026-08-08 16:35 UTCEPSS rescore
  31. 2026-08-06 13:45 UTCEPSS rescore
  32. 2026-08-05 19:15 UTCEPSS rescore
  33. 2026-08-04 15:08 UTCEPSS rescore
  34. 2026-08-04 10:36 UTCEPSS rescore
  35. 2026-08-03 10:34 UTCEPSS rescore
  36. 2026-08-02 02:25 UTCEPSS rescore
  37. 2026-08-02 02:25 UTCEPSS rescore
  38. 2026-08-01 15:06 UTCOSV refresh
  39. 2026-08-01 04:14 UTCEPSS rescore
  40. 2026-07-30 16:26 UTCEPSS rescore
  41. 2026-07-30 01:29 UTCEPSS rescore
  42. 2026-07-28 15:34 UTCEPSS rescore
  43. 2026-07-27 14:11 UTCEPSS rescore
  44. 2026-07-26 14:53 UTCEPSS rescore
  45. 2026-07-25 14:16 UTCEPSS rescore
  46. 2026-07-24 14:16 UTCEPSS rescore
  47. 2026-07-23 14:17 UTCEPSS rescore
  48. 2026-07-23 14:17 UTCEPSS rescore
  49. 2026-07-23 02:33 UTCEG score recompute
  50. 2026-07-22 23:20 UTCEG score recompute
  51. 2026-07-22 14:07 UTCEPSS rescore
  52. 2026-07-21 15:23 UTCEPSS rescore
  53. 2026-07-21 15:23 UTCEPSS rescore
  54. 2026-07-20 17:06 UTCEPSS rescore
  55. 2026-07-19 14:30 UTCEPSS rescore
  56. 2026-07-19 14:30 UTCEPSS rescore
  57. 2026-07-19 02:28 UTCEPSS rescore
  58. 2026-07-19 02:28 UTCEPSS rescore
  59. 2026-07-18 10:03 UTCEPSS rescore
  60. 2026-07-18 10:03 UTCEPSS rescore
  61. 2026-07-15 16:56 UTCEPSS rescore
  62. 2026-07-15 16:56 UTCEPSS rescore
  63. 2026-07-15 01:59 UTCEPSS rescore
  64. 2026-07-15 01:59 UTCEPSS rescore
  65. 2026-07-14 22:10 UTCOSV refresh
  66. 2026-07-13 22:28 UTCEPSS rescore
  67. 2026-07-13 06:11 UTCEPSS rescore
  68. 2026-07-13 06:11 UTCEPSS rescore
  69. 2026-07-12 05:45 UTCEPSS rescore
  70. 2026-07-11 08:26 UTCEPSS rescore
  71. 2026-07-09 19:09 UTCEPSS rescore
  72. 2026-07-09 19:09 UTCEPSS rescore
  73. 2026-07-07 13:45 UTCEPSS rescore
  74. 2026-07-07 13:45 UTCEPSS rescore
  75. 2026-07-06 16:26 UTCEPSS rescore

Related CVEs(same product + same CWE)

Same product

2 shown

crates.io:anoncreds-clsignatures

Frequently asked(5)

What is CVE-2024-21670?
CVE-2024-21670 is a medium vulnerability published on January 16, 2024. Ursa is a cryptographic library for use with blockchains. The revocation schema 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, allowing a malicious holder of a revoked credential to…
When was CVE-2024-21670 disclosed?
CVE-2024-21670 was first published on January 16, 2024, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-21670 actively exploited?
CVE-2024-21670 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (18th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-21670?
CVE-2024-21670 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2024-21670?
A fixed version for CVE-2024-21670 is listed under Patch Availability on this page: update to the version listed for your package.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-21670

Explore →

Is Your Infrastructure Affected by CVE-2024-21670?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs