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CVE-2025-45770

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是一个使用Json Web Token和Json Web Signature的简单库。 Jwt v5.4.3版本存在安全漏洞，该漏洞源于弱加密。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2025-45770

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
jwt v5.4.3 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Jwt 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jwt是一个使用Json Web Token和Json Web Signature的简单库。 Jwt v5.4.3版本存在安全漏洞，该漏洞源于弱加密。
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-2025-45770

# 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: lcobucci/jwt 5.4.3 accepted a weak 256-bit HS256 key; weak-encryption round-trip recovered planted secret PROOF_bf14887cc925c451
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 · 7796 chars
GitHub 复现环境（可 clone 直接跑）
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POC zip download
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III. Intelligence Information for CVE-2025-45770

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Same Patch Batch · n/a · 2025-07-31 · 26 CVEs total

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CVE-2024-34327 Sielox AnyWare 安全漏洞
CVE-2025-52203 Project Management 安全漏洞
CVE-2025-52289 MagnusBilling 安全漏洞
CVE-2025-45768 pyjwt 安全漏洞
CVE-2025-45769 PHP-JWT 安全漏洞
CVE-2025-51385 D-LINK DI-8200 安全漏洞
CVE-2025-51503 Microweber CMS 安全漏洞
CVE-2025-51569 LB-Link BL-CPE300M 安全漏洞
CVE-2025-51383 D-Link DI-8200 安全漏洞
CVE-2025-51384 D-LINK DI-8200 安全漏洞
CVE-2025-50572 RSA Security RSA Archer 安全漏洞
CVE-2025-26063 Intelbras RX1500和Intelbras RX3000 安全漏洞
CVE-2025-50850 CS Cart 安全漏洞
CVE-2025-50847 CS Cart 安全漏洞
CVE-2025-50866 CloudClassroom-PHP-Project 安全漏洞
CVE-2025-50848 CS Cart 安全漏洞
CVE-2025-50867 CloudClassroom-PHP-Project 安全漏洞
CVE-2025-50849 CS Cart 安全漏洞

Showing top 20 of 26 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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

V. Comments for CVE-2025-45770

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