CVE-2026-65631— erlang-jose RSA JWK 解析导致 CPU 耗尽拒绝服务漏洞
一分钟漏洞结论
影响对象
potatosalad jose
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
erlang-jose 库中存在算法复杂度低效的漏洞，使得未认证的远程攻击者能够通过提交精心构造的 RSA JSON Web Key（JWK）来引发 CPU 耗尽型拒绝服务（DoS）攻击。 当应用程序通过 jose_jwk:from_binary/1 或 jose_jwk:from_map/1 公共 API（或其 Elixir 封装 JOSE.JWK.from_binary/1 和 JOSE.JWK.from_map/1）解析不可信的 JWK 时，若提供的 RSA 私钥包含 d、e 和 n 参数，但缺失所有中国剩余
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application
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一、 漏洞 CVE-2026-65631 基础信息
漏洞信息
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Vulnerability Title
erlang-jose RSA JWK parsing attempts to factor an attacker-controlled modulus, enabling CPU-exhaustion denial of service
来源: CVE Program / CVE List V5
Vulnerability Description
Inefficient Algorithmic Complexity in erlang-jose allows an unauthenticated remote attacker to cause a CPU-exhaustion denial of service by submitting a crafted RSA JSON Web Key.
When an application parses an untrusted JWK through the public jose_jwk:from_binary/1 or jose_jwk:from_map/1 API (or the Elixir wrappers JOSE.JWK.from_binary/1 and JOSE.JWK.from_map/1), an RSA private key that supplies d, e, and n but omits all Chinese Remainder Theorem parameters (p, q, dp, dq, qi) is routed into convert_sfm_to_crt/1, which tries to recover the missing primes by factoring the modulus. The three integers are read straight from the base64url input and are never validated as a real RSA key. When the modulus cannot be split into two factors (for example, when it is itself prime), the search loop convert_sfm_to_crt_find_p/6 performs a modular exponentiation over the attacker-sized modulus on every iteration and never succeeds. A single request of a few hundred bytes forces close to one CPU-second of work before an internal one-second watchdog kills the worker, and a larger modulus raises the cost further. By flooding such requests an attacker can saturate every scheduler and deny service, without credentials, a valid RSA key, or any special configuration.
This issue affects jose: from 1.7.7 before 1.11.13.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
算法复杂性
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| potatosalad | jose | 1.7.7 ~ 1.11.13 |
cpe:2.3:a:potatosalad:jose:*:*:*:*:*:*:*:*
|
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| potatosalad | jose | d19e1ba68d88c68d29aa942be2573a22dbafca1f ~ bfd336c0062bff93e65d08c22361897e96afd956 |
cpe:2.3:a:potatosalad:jose:*:*:*:*:*:*:*:*
|
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二、漏洞 CVE-2026-65631 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-65631 其他参考 (5)
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EEF-CVE-2026-65631 - OSV related
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CVE-2026-65631 related
同批安全公告 · potatosalad · 2026-10-26 · 共 8 条
| CVE-2026-65629 | 7.4 HIGH | jose 弱 PBKDF2 参数致私钥导出漏洞 |
| CVE-2026-65627 | 6.9 MEDIUM | jose_jwe_zip 解压缩炸弹漏洞 |
| CVE-2026-65626 | 5.9 MEDIUM | jose RSAES-PKCS1-v1_5 解密填充预言机漏洞 |
| CVE-2026-65628 | 5.9 MEDIUM | JOSE 无限递归导致 CPU 拒绝服务漏洞 |
| CVE-2026-65625 | 5.9 MEDIUM | jose 库 AES-GCM 标签伪造漏洞 |
| CVE-2026-65630 | 5.9 MEDIUM | jose X25519 标量乘法时序侧信道泄露私钥 |
| CVE-2026-65632 | 5.1 MEDIUM | jose ECDSA 签名长度未验证致签名可篡改漏洞 |