HSS public-key level count unbounded, enabling huge allocation on verify
Summary
| CVE | CVE-2026-58060 |
|---|---|
| State | PUBLISHED |
| Assigner | bcorg |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-03 03:16:45 UTC |
| Updated | 2026-09-02 14:32:13 UTC |
| Description | In Bouncy Castle for Java before 1.85, HSS public-key level count unbounded, enabling huge allocation on verify. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series). |
Risk And Classification
Primary CVSS: v4.0 8.7 HIGH from 91579145-5d7b-4cc5-b925-a0262ff19630
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber
EPSS: 0.003650000 probability, percentile 0.292220000 (date 2026-08-07)
Problem Types: CWE-789 | CWE-789 CWE-789 Memory Allocation with Excessive Size Value
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | 91579145-5d7b-4cc5-b925-a0262ff19630 | Secondary | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Amber |
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
NoneUser Interaction
NoneConfidentiality
NoneIntegrity
NoneAvailability
HighSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Bouncycastle | Bc-java | All | All | All | All |
| Application | Bouncycastle | Bouncy Castle For Java Lts | All | All | All | All |
| Application | Bouncycastle | Fips Java Api | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Legion Of The Bouncy Castle Inc. | BC-JAVA | affected 1.65 1.85 maven | all |
| CNA | Legion Of The Bouncy Castle Inc. | BC-LTS-JAVA | affected 2.73.0 2.73.12 maven | all |
| CNA | Legion Of The Bouncy Castle Inc. | BC-FJA | affected 2.0.0 2.0.2 maven | all |
| CNA | Legion Of The Bouncy Castle Inc. | BC-FJA | affected 2.1.0 2.1.3 maven | all |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9058060 | 91579145-5d7b-4cc5-b925-a0262ff19630 | github.com | Third Party Advisory, Patch |
| github.com/bcgit/bc-java/commit/6c9f30b3fdaa3f2140809278caebbffc55920922 | 91579145-5d7b-4cc5-b925-a0262ff19630 | github.com | Patch |
| github.com/bcgit/bc-java/commit/311cabbb6fcead7647fec16681423a4439118276 | 91579145-5d7b-4cc5-b925-a0262ff19630 | github.com | Patch |
| github.com/bcgit/bc-java/wiki/CVE-2026-58060 | MITRE | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Alex Gaynor in collaboration with Claude and Anthropic Research (en)
There are currently no legacy QID mappings associated with this CVE.