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CVE-2020-26160

Quick assessment

Affected
n/a n/a
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

jwt-go是个人开发者的一个Go语言的JWT实现。 jwt-go 4.0.0-preview1之前版本存在安全漏洞。攻击者可利用该漏洞在使用[]string{} for m"aud"的情况下绕过预期的访问限制。

CVSS 7.5 · High EPSS 2.16% · P82

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-26160

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m["aud"] (which is allowed by the specification). Because the type assertion fails, "" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
jwt-go 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
jwt-go是个人开发者的一个Go语言的JWT实现。 jwt-go 4.0.0-preview1之前版本存在安全漏洞。攻击者可利用该漏洞在使用[]string{} for m["aud"](规范允许)的情况下绕过预期的访问限制。
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
- n/a n/a -

II. Public POCs for CVE-2020-26160

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker: VULNERABLE: JWT with "aud": [] passed the audience check; secret PROOF_129359ed61425a34 exfiltrated
Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
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claude_code · 3852 chars
GitHub 复现环境（可 clone 直接跑）
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2020-26160

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Patches & Fixes for CVE-2020-26160 (1)

Vendor Advisories for CVE-2020-26160 (1)

Same Patch Batch · n/a · 2020-09-30 · 45 CVEs total

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CVE-2020-15849 desk2.3 SettingsController SQL注入漏洞
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CVE-2020-19676 Nacos 信息泄露漏洞
CVE-2020-24721 Google Apple GAEN 安全漏洞
CVE-2020-19672 Niushop B2B2C 代码问题漏洞
CVE-2019-18991 Qualcomm 芯片和D-Link DWR-116授权问题漏洞
CVE-2019-18990 多款 Realtek 授权问题漏洞

Showing top 20 of 45 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2020-26160

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