CVE-2026-59651

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-03. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 5 sources updated this week

Also known asEUVD-2026-52023 (ENISA EUVD) · GHSA-mwmr-38hj-q7gm (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In Bouncy Castle for Java before 1.85, BKS keystore accepts legacy version with 16-bit integrity MAC key. This issue also affects Bouncy Castle for Java LTS before 2.73.12.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 3, 2026

Last Modified

September 2, 2026

Advisory Details (2)

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

commit faf5daa6e9b8 (bcgit/bc-java)

Fix landed in bcgit/bc-java commit faf5daa6e9b8 — awaiting tagged release

https://github.com/bcgit/bc-java/commit/faf5daa6e9b8460f862afc0af1cc0da365f7d4d2
Web page

Home · bcgit/bc-java Wiki · GitHub

https://github.com/bcgit/bc-java/wiki/CVE-2026-59651

Patch Availability(11)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatocp-tools-4/jenkins-rhel9:17920415142026-10-22redhat
redhatocp-tools-4/jenkins-rhel9:17920402872026-10-22redhat
redhatocp-tools-4/jenkins-rhel9:17920401312026-10-22redhat
redhatocp-tools-4/jenkins-rhel9:17920400962026-10-22redhat
redhatocp-tools-4/jenkins-rhel8:17920443262026-10-22redhat
redhatocp-tools-4/jenkins-rhel8:17920443272026-10-22redhat
redhatocp-tools-4/jenkins-rhel8:17920443822026-10-22redhat
redhatocp-tools-4/jenkins-rhel9:17920404282026-10-22redhat
redhatocp-tools-4/jenkins-rhel9:17920407332026-10-22redhat
redhatocp-tools-4/jenkins-rhel9:17920400812026-10-22redhat
redhatocp-tools-4/jenkins-rhel8:17920443862026-10-22redhat

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 10× in last 7d / 51× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 255 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 155 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  4. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  5. 2026-10-28 22:43 UTCEG score recompute
  6. 2026-10-28 22:43 UTCVendor advisory
  7. 2026-10-28 22:43 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  8. 2026-10-28 21:55 UTCOSV refresh
  9. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  11. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-10-25 14:16 UTCEG score recompute
  13. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  15. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  17. 2026-10-21 03:57 UTCEG score recompute
  18. 2026-10-21 03:56 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  19. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  20. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  22. 2026-10-18 03:27 UTCEG score recompute
  23. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  24. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
Show 75 more
  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-10-13 15:53 UTCEG score recompute
  4. 2026-10-13 15:52 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  6. 2026-10-12 15:52 UTCEG score recompute
  7. 2026-10-11 19:36 UTCEG score recompute
  8. 2026-10-11 16:51 UTCEG score recompute
  9. 2026-10-11 14:13 UTCEG score recompute
  10. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  15. 2026-10-06 23:48 UTCEG score recompute
  16. 2026-10-06 23:48 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  18. 2026-10-05 19:50 UTCEG score recompute
  19. 2026-10-05 19:50 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  20. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  21. 2026-10-04 23:47 UTCEG score recompute
  22. 2026-10-04 23:47 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  23. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  24. 2026-10-04 06:23 UTCEG score recompute
  25. 2026-10-04 06:23 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  26. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  27. 2026-10-03 02:40 UTCEG score recompute
  28. 2026-10-03 02:40 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  29. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  30. 2026-10-02 10:26 UTCEG score recompute
  31. 2026-10-02 10:26 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  32. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  33. 2026-10-01 15:41 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  34. 2026-10-01 02:40 UTCEG score recompute
  35. 2026-10-01 02:40 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  36. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  37. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  38. 2026-09-29 06:45 UTCEG score recompute
  39. 2026-09-29 06:45 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  40. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  41. 2026-09-28 07:19 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  42. 2026-09-27 18:19 UTCEG score recompute
  43. 2026-09-27 18:19 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  44. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  45. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  46. 2026-09-25 04:48 UTCEG score recompute
  47. 2026-09-25 04:48 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  48. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  49. 2026-09-24 12:52 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  50. 2026-09-23 23:48 UTCEG score recompute
  51. 2026-09-23 23:48 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  52. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  53. 2026-09-23 10:32 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  54. 2026-09-22 21:30 UTCEG score recompute
  55. 2026-09-22 21:30 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  56. 2026-09-22 06:43 UTCEG score recompute
  57. 2026-09-22 06:43 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  58. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  59. 2026-09-20 11:08 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  60. 2026-09-19 17:57 UTCEG score recompute
  61. 2026-09-19 17:56 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  62. 2026-09-19 03:52 UTCEG score recompute
  63. 2026-09-19 03:52 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  64. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  65. 2026-09-18 14:51 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  66. 2026-09-18 01:13 UTCEG score recompute
  67. 2026-09-18 01:13 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  68. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  69. 2026-09-17 01:17 UTCEG score recompute
  70. 2026-09-17 01:17 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  71. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  72. 2026-09-16 06:11 UTCEG score recompute
  73. 2026-09-16 06:11 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5
  74. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  75. 2026-09-15 17:09 UTCGHSA enrichmentGHSA-mwmr-38hj-q7gm · GitHub severity HIGH · GitHub CVSS 7.5

Frequently asked(5)

What is CVE-2026-59651?
CVE-2026-59651 is a high-severity vulnerability; its CVE record was published on August 3, 2026. In Bouncy Castle for Java before 1.85, BKS keystore accepts legacy version with 16-bit integrity MAC key. This issue also affects Bouncy Castle for Java LTS before 2.73.12.
When was the CVE record for CVE-2026-59651 published?
The CVE record for CVE-2026-59651 was published on August 3, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 2, 2026; the record at its source may have been updated since.
Is CVE-2026-59651 actively exploited?
CVE-2026-59651 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59651?
CVE-2026-59651 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-59651?
A fix for CVE-2026-59651 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59651 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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