Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2024-26134— CBOR2 decoder has potential buffer overflow

Quick assessment

Affected
agronholm cbor2
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.

cbor2是一个具有广泛标签支持的二进制对象表示序列化格式编码和解码的库。 cbor2 5.5.1版本至5.6.2之前版本存在安全漏洞。攻击者利用该漏洞通过发送足够长的对象来解析 CBOR 二进制文件，从而使服务崩溃。

CVSS 7.5 · High EPSS 1.18% · P65

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-26134

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
CBOR2 decoder has potential buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) (RFC 8949) serialization format. Starting in version 5.5.1 and prior to version 5.6.2, an attacker can crash a service using cbor2 to parse a CBOR binary by sending a long enough object. Version 5.6.2 contains a patch for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
cbor2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cbor2是一个具有广泛标签支持的二进制对象表示序列化格式编码和解码的库。 cbor2 5.5.1版本至5.6.2之前版本存在安全漏洞。攻击者利用该漏洞通过发送足够长的对象来解析 CBOR 二进制文件，从而使服务崩溃。
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
agronholm cbor2 >= 5.5.1, < 5.6.2 -

II. Public POCs for CVE-2024-26134

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6938 chars
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
100+ AI POC generations per month

III. Intelligence Information for CVE-2024-26134

请登录查看更多情报信息。

Patches & Fixes for CVE-2024-26134 (3)

Vendor Advisories for CVE-2024-26134 (1)

Mailing List Discussions for CVE-2024-26134 (3)

IV. Related Vulnerabilities

Same product: cbor2
Same vendor: agronholm
Same weakness: CWE-120

V. Comments for CVE-2024-26134

No comments yet

Leave a comment