CVE-2026-8149— GCM chunking can lead to bad tag exception on decryption
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I. Basic Information for CVE-2026-8149
Vulnerability Information
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Vulnerability Title
GCM chunking can lead to bad tag exception on decryption
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
软件实现和设计文档不一致
Source: NVD (National Vulnerability Database)
Vulnerability Title
Legion of the Bouncy Castle BC-FJA 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Legion of the Bouncy Castle BC-FJA是澳大利亚Legion of the Bouncy Castle公司的一套提供高强度加密算法与安全认证能力的加密库组件。 Legion of the Bouncy Castle BC-FJA存在安全漏洞，该漏洞源于加密计算异常，可能影响数据的机密性或完整性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-FJA | 2.1.0 ~ 2.1.2 | - |
II. Public POCs for CVE-2026-8149
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://do-not-publish.bouncycastle.org/do_not_publishvendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-8149
IV. Related Vulnerabilities
Same vendor: Legion of the Bouncy Castle Inc.
- CVE-2026-3505
Unbounded PGP AEAD chunk size leads to pre-auth resource exh - CVE-2026-5588
PKIX draft CompositeVerifier accepts empty signature sequenc - CVE-2026-5598
Non-constant time comparisons risk private key leakage in Fr - CVE-2026-0636
LDAP Injection Vulnerability in LDAPStoreHelper.java - CVE-2025-14813
GOSTCTR implementation unable to process more than 255 block
Same weakness: CWE-1068
V. Comments for CVE-2026-8149
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