CVE-2026-59644

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-59644
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59644.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-59644
Downstream
Published
2026-08-03T00:50:50.154Z
Modified
2026-08-03T11:45:24.063946178Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
MLS hash-ratchet honours arbitrary 32-bit generation counter from sender
Details

In Bouncy Castle for Java before 1.85, MLS hash-ratchet honours arbitrary 32-bit generation counter from sender.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59644.json",
    "cna_assigner": "bcorg",
    "cwe_ids": [
        "CWE-834"
    ]
}
References

Affected packages

Git / github.com/bcgit/bc-java

Affected ranges

Type
GIT
Repo
https://github.com/bcgit/bc-java
Events
Introduced
9032821b326fba9fec7528899dfffa79f9f19aef
Fixed
57fbd3c501f7a369f64eda311d6a709fc0bcae84
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "1.73"
        },
        {
            "fixed": "1.85"
        }
    ]
}

Affected versions

Other
r1rv73
r1rv74
r1rv75
r1rv76
r1rv77
r1rv78
r1rv80
r1rv81
r1rv82
r1rv83
r1rv84

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59644.json"