CVE-2026-12205

CRITICALPre-NVD 9.19.1
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-16. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery.

Crypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it.

The first sign() on a Key object picks a nonce, and every later sign() on that same object reuses it, producing an identical "r".

Keys used to sign more than once with an affected version should be considered compromised.

CVSS v3
9.1
EG Score
9.1(high)
EPSS
20.7%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 16, 2026

Advisory Details (3)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-12205: Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery

http://www.openwall.com/lists/oss-security/2026/06/15/4

Vendor Advisories for CVE-2026-12205(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 75× in last 7d / 224× 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 224 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-12205?
CVE-2026-12205 is a critical vulnerability published on June 15, 2026. Crypt::DSA versions before 1.21 for Perl reused the nonce across signatures, leading to private-key recovery. Crypt::DSA::sign caches the per-signature nonce material in the Key object without ever clearing it. The first sign() on a Key object picks a nonce, and every later sign() on that same…
When was CVE-2026-12205 disclosed?
CVE-2026-12205 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12205 actively exploited?
CVE-2026-12205 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12205?
CVE-2026-12205 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-12205?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12205, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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