CVE-2026-59640

In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).

Database specific

{
    "cwe_ids": [
        "CWE-203"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59640.json",
    "cna_assigner": "bcorg",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "1.85"
                },
                {
                    "introduced": "1.0.0"
                },
                {
                    "fixed": "1.0.13"
                },
                {
                    "introduced": "2.0.0"
                },
                {
                    "fixed": "2.0.13"
                },
                {
                    "introduced": "2.1.0"
                },
                {
                    "fixed": "2.1.13"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/bcgit/bc-lts-java

Affected ranges

Type

GIT

Repo

https://github.com/bcgit/bc-lts-java

Events

Introduced

468b5082f3f0971e80bf9edb7029c17b39b9ba0c

Fixed

f101b232c5d3e07ecdd504210a57e43831d6cd65

Database specific

{
    "extracted_events": [
        {
            "introduced": "2.73.0"
        },
        {
            "fixed": "2.73.12"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

Other

r2rv73dot0

r2rv73dot1

r2rv73dot10

r2rv73dot11

r2rv73dot3

r2rv73dot4

r2rv73dot6

r2rv73dot8

r2rv73dot9

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59640.json"