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CVE-2025-67221

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.

orjson是ijl个人开发者的一个快速、正确的 Python JSON 库。 orjson 3.11.4及之前版本存在安全漏洞，该漏洞源于orjson.dumps函数未限制深度嵌套JSON文档的递归。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.60% · P47

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2025-67221

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The orjson.dumps function in orjson thru 3.11.4 does not limit recursion for deeply nested JSON documents.
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
orjson 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
orjson是ijl个人开发者的一个快速、正确的 Python JSON 库。 orjson 3.11.4及之前版本存在安全漏洞，该漏洞源于orjson.dumps函数未限制深度嵌套JSON文档的递归。
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-2025-67221

# POC Description Source Link Shenlong Link
1 A vulnerability in orjson https://github.com/kpatsakis/CVE-2025-67221 POC Details
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III. Intelligence Information for CVE-2025-67221

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Other References for CVE-2025-67221 (1)

Same Patch Batch · n/a · 2026-01-22 · 11 CVEs total

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CVE-2025-69820 beam 安全漏洞
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CVE-2025-70899 PHPGurukul Online Course Registration 安全漏洞
CVE-2025-69828 TMS Management Console 安全漏洞
CVE-2025-56589 Apryse HTML2PDF SDK 安全漏洞
CVE-2025-56590 Apryse HTML2PDF SDK 安全漏洞
CVE-2025-66428 WebPros WordPress Toolkit 安全漏洞

IV. Related Vulnerabilities

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

V. Comments for CVE-2025-67221

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