CVE-2026-12860

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory (severity: HIGH) published 2026-08-03. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In Bouncy Castle for Java before 1.85, RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path. This issue also affects Bouncy Castle for Java LTS before 2.73.12.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

August 3, 2026

Last Modified

August 28, 2026

Advisory Details (2)

Auto-updated Aug 3, 2026
Patch available. Sources: github_commit.
github_commit

commit ea5970ea9b2f (bcgit/bc-java)

Fix landed in bcgit/bc-java commit ea5970ea9b2f — awaiting tagged release

https://github.com/bcgit/bc-java/commit/ea5970ea9b2fb91d763b904692fd21089ca3e396
generic

Home · bcgit/bc-java Wiki · GitHub

https://github.com/bcgit/bc-java/wiki/CVE-2026-12860

Vendor Advisories for CVE-2026-12860(2)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatbcprov-jdk18on2026-09-24redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
bouncycastle1.68-2 ... 1.80-3 (12 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
bouncycastle1.72-2 ... 1.86-1 (6 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
bouncycastle1.80-3, 1.86-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
bouncycastle1.80-3
  • every version up to 1.86-1: fixed in 1.86-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 69× 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 199 total refreshes for this CVE.

  1. 2026-10-04 23:21 UTCEPSS rescore
  2. 2026-10-04 06:21 UTCEG score recompute
  3. 2026-10-04 06:21 UTCVendor advisory
  4. 2026-10-04 06:21 UTCGHSA enrichment
  5. 2026-10-03 14:25 UTCEPSS rescore
  6. 2026-10-02 10:24 UTCEG score recompute
  7. 2026-10-02 10:24 UTCVendor advisory
  8. 2026-10-02 10:24 UTCGHSA enrichment
  9. 2026-10-01 19:49 UTCEPSS rescore
  10. 2026-10-01 02:39 UTCEG score recompute
  11. 2026-10-01 02:39 UTCVendor advisory
  12. 2026-10-01 02:38 UTCGHSA enrichment
  13. 2026-09-30 15:02 UTCEPSS rescore
  14. 2026-09-29 15:20 UTCEPSS rescore
  15. 2026-09-29 06:43 UTCEG score recompute
  16. 2026-09-29 06:43 UTCVendor advisory
  17. 2026-09-29 06:43 UTCGHSA enrichment
  18. 2026-09-28 13:50 UTCEPSS rescore
  19. 2026-09-27 18:18 UTCEG score recompute
  20. 2026-09-27 18:18 UTCVendor advisory
  21. 2026-09-27 18:18 UTCGHSA enrichment
  22. 2026-09-26 15:58 UTCEPSS rescore
  23. 2026-09-25 05:36 UTCEG score recompute
  24. 2026-09-25 05:36 UTCGHSA enrichment
  25. 2026-09-24 05:57 UTCEG score recompute
Show 75 more
  1. 2026-09-24 05:57 UTCGHSA enrichment
  2. 2026-09-23 13:47 UTCEPSS rescore
  3. 2026-09-23 05:21 UTCEG score recompute
  4. 2026-09-23 05:21 UTCGHSA enrichment
  5. 2026-09-22 05:42 UTCEG score recompute
  6. 2026-09-22 05:42 UTCGHSA enrichment
  7. 2026-09-20 20:15 UTCEPSS rescore
  8. 2026-09-20 11:08 UTCEG score recompute
  9. 2026-09-20 11:08 UTCGHSA enrichment
  10. 2026-09-19 08:01 UTCEG score recompute
  11. 2026-09-19 08:01 UTCGHSA enrichment
  12. 2026-09-18 19:27 UTCEPSS rescore
  13. 2026-09-18 06:42 UTCEG score recompute
  14. 2026-09-18 06:42 UTCGHSA enrichment
  15. 2026-09-17 07:02 UTCEG score recompute
  16. 2026-09-17 07:02 UTCGHSA enrichment
  17. 2026-09-16 06:43 UTCEG score recompute
  18. 2026-09-16 06:43 UTCGHSA enrichment
  19. 2026-09-16 05:14 UTCEPSS rescore
  20. 2026-09-15 07:04 UTCEG score recompute
  21. 2026-09-15 07:04 UTCGHSA enrichment
  22. 2026-09-14 05:47 UTCEG score recompute
  23. 2026-09-14 05:47 UTCGHSA enrichment
  24. 2026-09-13 16:46 UTCEPSS rescore
  25. 2026-09-13 06:08 UTCEG score recompute
  26. 2026-09-13 06:08 UTCGHSA enrichment
  27. 2026-09-12 15:00 UTCEPSS rescore
  28. 2026-09-12 06:26 UTCEG score recompute
  29. 2026-09-12 06:26 UTCGHSA enrichment
  30. 2026-09-11 14:52 UTCEPSS rescore
  31. 2026-09-11 09:36 UTCEPSS rescore
  32. 2026-09-11 06:32 UTCEG score recompute
  33. 2026-09-11 06:32 UTCGHSA enrichment
  34. 2026-09-10 09:34 UTCEPSS rescore
  35. 2026-09-10 06:52 UTCGHSA enrichment
  36. 2026-09-09 06:49 UTCEG score recompute
  37. 2026-09-09 06:49 UTCGHSA enrichment
  38. 2026-09-08 22:00 UTCEPSS rescore
  39. 2026-09-07 19:02 UTCEG score recompute
  40. 2026-09-07 19:02 UTCGHSA enrichment
  41. 2026-09-07 16:01 UTCEPSS rescore
  42. 2026-09-06 13:47 UTCEPSS rescore
  43. 2026-09-06 09:36 UTCEG score recompute
  44. 2026-09-06 09:36 UTCGHSA enrichment
  45. 2026-09-05 09:57 UTCEG score recompute
  46. 2026-09-05 09:57 UTCGHSA enrichment
  47. 2026-09-04 10:18 UTCEG score recompute
  48. 2026-09-04 10:18 UTCGHSA enrichment
  49. 2026-09-04 05:06 UTCEPSS rescore
  50. 2026-09-03 08:59 UTCEG score recompute
  51. 2026-09-03 08:59 UTCGHSA enrichment
  52. 2026-09-02 14:11 UTCEPSS rescore
  53. 2026-09-01 22:54 UTCEG score recompute
  54. 2026-09-01 22:54 UTCGHSA enrichment
  55. 2026-09-01 13:53 UTCEPSS rescore
  56. 2026-09-01 04:39 UTCEPSS rescore
  57. 2026-08-31 23:14 UTCGHSA enrichment
  58. 2026-08-30 21:45 UTCEG score recompute
  59. 2026-08-30 21:45 UTCGHSA enrichment
  60. 2026-08-30 19:17 UTCEPSS rescore
  61. 2026-08-30 01:21 UTCEPSS rescore
  62. 2026-08-29 22:06 UTCEG score recompute
  63. 2026-08-29 22:05 UTCGHSA enrichment
  64. 2026-08-28 21:40 UTCEPSS rescore
  65. 2026-08-28 16:57 UTCEG score recompute▼ 3.40
  66. 2026-08-28 16:56 UTCGHSA enrichment
  67. 2026-08-28 16:50 UTCNVD updateCVSS v3 → 5.3 · severity → MEDIUM
  68. 2026-08-27 20:04 UTCEG score recompute
  69. 2026-08-27 20:03 UTCGHSA enrichment
  70. 2026-08-27 14:24 UTCEPSS rescore
  71. 2026-08-27 08:44 UTCGHSA enrichment
  72. 2026-08-26 21:34 UTCEG score recompute
  73. 2026-08-26 21:34 UTCGHSA enrichment
  74. 2026-08-26 10:27 UTCGHSA enrichment
  75. 2026-08-25 23:22 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-12860?
CVE-2026-12860 is a medium vulnerability published on August 3, 2026. In Bouncy Castle for Java before 1.85, RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path. This issue also affects Bouncy Castle for Java LTS before 2.73.12.
When was CVE-2026-12860 disclosed?
CVE-2026-12860 was first published on August 3, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12860 actively exploited?
CVE-2026-12860 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12860?
CVE-2026-12860 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-12860?
A fix for CVE-2026-12860 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-12860 are linked in the Vendor Advisories panel on this page.

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