Description
A vulnerability in Legion of the Bouncy Castle Inc. BC-FJA BC-FIPS on Linux, X86_64, AVX, AVX-512f.

This vulnerability is associated with program files gcm128w, gcm512w.



This issue affects BC-FJA: from 2.1.0 through 2.1.2.
Published: 2026-05-08
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Workaround

If possible pass whole message to GCM via doFinal(..) for decryption. Issue only occurs when decryption is chunked at certain boundaries.

Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-mx76-r943-rf8g Bouncy Castle has a vulnerability in program files gcm128w, gcm512w
History

Sun, 10 May 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Bouncycastle
Bouncycastle bc-fja
Vendors & Products Bouncycastle
Bouncycastle bc-fja

Fri, 08 May 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 08 May 2026 06:30:00 +0000

Type Values Removed Values Added
Description A vulnerability in Legion of the Bouncy Castle Inc. BC-FJA BC-FIPS on Linux, X86_64, AVX, AVX-512f. This vulnerability is associated with program files gcm128w, gcm512w. This issue affects BC-FJA: from 2.1.0 through 2.1.2.
Title GCM chunking can lead to bad tag exception on decryption
Weaknesses CWE-1068
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/S:N/RE:M/U:Amber'}


Subscriptions

Bouncycastle Bc-fja
cve-icon MITRE

Status: PUBLISHED

Assigner: bcorg

Published:

Updated: 2026-05-08T12:51:03.873Z

Reserved: 2026-05-08T05:23:49.585Z

Link: CVE-2026-8149

cve-icon Vulnrichment

Updated: 2026-05-08T12:50:59.531Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-08T07:16:29.603

Modified: 2026-05-08T15:38:02.517

Link: CVE-2026-8149

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-10T21:26:04Z

Weaknesses