CVE-2026-15055

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

Score 8.2 from GitHub Security Advisory published 2026-08-03. NVD baseline CVSS 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.2Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

In Bouncy Castle for Java before 1.85, PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).

CVSS v3
8.2
EG Score
8.2HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity82% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.3%
EPSS %ILE
25th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

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
Upstream fix merged — awaiting tagged release. Sources: github_commit.
github_commit

commit 7ab4ee67a013 (bcgit/bc-java)

Fix landed in bcgit/bc-java commit 7ab4ee67a013 — awaiting tagged release

https://github.com/bcgit/bc-java/commit/7ab4ee67a0135950001b29b41a96d8a9a5d3b68b
generic

Home · bcgit/bc-java Wiki · GitHub

https://github.com/bcgit/bc-java/wiki/CVE-2026-15055

Vendor Advisories for CVE-2026-15055(1)

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

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 19× in last 7d / 81× 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 185 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-15055?
CVE-2026-15055 is a high vulnerability published on August 3, 2026. In Bouncy Castle for Java before 1.85, PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X…
When was CVE-2026-15055 disclosed?
CVE-2026-15055 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-2026-15055 actively exploited?
CVE-2026-15055 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15055?
CVE-2026-15055 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-15055?
An upstream fix for CVE-2026-15055 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-15055 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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