CVE-2026-59647

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Source
https://cve.org/CVERecord?id=CVE-2026-59647
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-59647.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-59647
Downstream
Related
Published
2026-08-03T00:46:57.977Z
Modified
2026-08-14T18:56:24.700901811Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber CVSS Calculator
Summary
CRMF/CMP password-MAC honours unbounded iteration count
Details

In Bouncy Castle for Java before 1.85, CRMF/CMP password-MAC honours unbounded iteration count. 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).

Database specific 
{
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59647.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "1.0.0"
                },
                {
                    "fixed": "1.0.12"
                },
                {
                    "introduced": "2.0.0"
                },
                {
                    "fixed": "2.0.12"
                },
                {
                    "introduced": "2.1.0"
                },
                {
                    "fixed": "2.1.12"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cna_assigner": "bcorg"
}
References

Affected packages

Git / github.com/bcgit/bc-java

Affected ranges

Type
GIT
Repo
https://github.com/bcgit/bc-java
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
57fbd3c501f7a369f64eda311d6a709fc0bcae84
Fixed
c99d6427d6818d04165b07b45dfda96f2b384c53
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.85"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}
Type
GIT
Repo
https://github.com/bcgit/bc-lts-java
Events
Introduced
468b5082f3f0971e80bf9edb7029c17b39b9ba0c
Fixed
f101b232c5d3e07ecdd504210a57e43831d6cd65
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "2.73.0"
        },
        {
            "fixed": "2.73.12"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

Other
r1rv73
r1rv74
r1rv75
r1rv76
r1rv77
r1rv78
r1rv80
r1rv81
r1rv82
r1rv83
r1rv84
r2rv73dot0
r2rv73dot1
r2rv73dot10
r2rv73dot11
r2rv73dot3
r2rv73dot4
r2rv73dot6
r2rv73dot8
r2rv73dot9

Database specific

vanir_signatures 
[
    {
        "digest": {
            "line_hashes": [
                "311364422625888269058408095146596687366",
                "309579080998695119046925374867626751876",
                "129798592693657596835692987390861036897"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "target": {
            "file": "core/src/main/java/org/bouncycastle/util/Properties.java"
        },
        "deprecated": false,
        "id": "CVE-2026-59647-112e1637",
        "source": "https://github.com/bcgit/bc-java/commit/c99d6427d6818d04165b07b45dfda96f2b384c53",
        "signature_type": "Line"
    },
    {
        "id": "CVE-2026-59647-466b4290",
        "signature_version": "v1",
        "target": {
            "file": "pkix/src/main/java/org/bouncycastle/cert/crmf/PKMACBuilder.java"
        },
        "deprecated": false,
        "source": "https://github.com/bcgit/bc-java/commit/c99d6427d6818d04165b07b45dfda96f2b384c53",
        "digest": {
            "line_hashes": [
                "282034187603892256663863769691837681373",
                "263521362359616960025411099985319982991",
                "115497456215366362001201246592857730270",
                "46416603333340295309544677322578512512",
                "53889960897588887475492976421895266829",
                "37737357403438712424962845174505027396",
                "47489986048131552733075460851433114733",
                "28419601338975652127744579826109286569",
                "102878209774513247431403751761087297209",
                "77256309732579255215269448706414049418"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "pkix/src/test/java/org/bouncycastle/cert/crmf/test/AllTests.java"
        },
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "332962983452388081120875387603598265973",
                "24547425068298275282899283791829706213",
                "187523879037815365199504240322801473252",
                "289167470408123512763983680959001897817",
                "201658720830234008980522847271740867412",
                "21817322581335455952578260982030694434",
                "308207455669245876460953481043343850053",
                "103596030790652456631271192219372070868"
            ],
            "threshold": 0.9
        },
        "source": "https://github.com/bcgit/bc-java/commit/c99d6427d6818d04165b07b45dfda96f2b384c53",
        "id": "CVE-2026-59647-5dec0a9e",
        "signature_type": "Line"
    },
    {
        "id": "CVE-2026-59647-c33bb89f",
        "signature_version": "v1",
        "target": {
            "file": "pkix/src/main/java/org/bouncycastle/cert/crmf/PKMACBuilder.java",
            "function": "checkIterationCountCeiling"
        },
        "deprecated": false,
        "source": "https://github.com/bcgit/bc-java/commit/c99d6427d6818d04165b07b45dfda96f2b384c53",
        "digest": {
            "function_hash": "57690285400429947527907924685401660647",
            "length": 185.0
        },
        "signature_type": "Function"
    }
]
source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-59647.json"
vanir_signatures_modified 
"2026-08-12T15:20:50Z"