CVE-2026-29000 漏洞深度分析

漏洞概述

CVE 编号： CVE-2026-29000
CVSS 评分： 9.3（CRITICAL）
CVSS 向量： CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE 分类： CWE-347
漏洞状态： Deferred
发布时间： 2026-03-04T22:16:18.783
最后更新： 2026-07-14T19:16:54.700

漏洞描述

pac4j-jwt versions prior to 4.5.9, 5.7.9, and 6.3.3 contain an authentication bypass vulnerability in JwtAuthenticator when processing encrypted JWTs that allows remote attackers to forge authentication tokens. Attackers who possess the server's RSA public key can create a JWE-wrapped PlainJWT with arbitrary subject and role claims, bypassing signature verification to authenticate as any user including administrators.

影响分析

此漏洞的具体影响取决于实际利用场景。"

修复建议

1. 及时关注厂商发布的安全更新和补丁
2. 升级受影响组件到最新版本
3. 如无法立即升级，参考厂商提供的临时缓解措施
4. 加强网络访问控制和监控

参考链接

1. https://www.codeant.ai/security-research/pac4j-jwt-authentication-bypass-public-key
2. https://www.pac4j.org/blog/security-advisory-pac4j-jwt-jwtauthenticator.html
3. https://www.vulncheck.com/advisories/pac4j-jwt-jwtauthenticator-authentication-bypass