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CVE-2020-7693— Denial of Service (DoS)

Quick assessment

Affected
n/a sockjs
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.

SockJS是一款浏览器JavaScript库。 SockJS 0.3.20之前版本中存在安全漏洞，该漏洞源于程序没有正确处理Upgrade标头。攻击者可利用该漏洞导致托管sockjs应用程序的容器崩溃。

CVSS 5.3 · Medium EPSS 4.98% · P92

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-7693

Vulnerability Information
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Vulnerability Title
Denial of Service (DoS)
Source: CVE Program / CVE List V5
Vulnerability Description
Incorrect handling of Upgrade header with the value websocket leads in crashing of containers hosting sockjs apps. This affects the package sockjs before 0.3.20.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
SockJS 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SockJS是一款浏览器JavaScript库。 SockJS 0.3.20之前版本中存在安全漏洞，该漏洞源于程序没有正确处理Upgrade标头。攻击者可利用该漏洞导致托管sockjs应用程序的容器崩溃。
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
- sockjs unspecified ~ 0.3.20 -

II. Public POCs for CVE-2020-7693

# POC Description Source Link Shenlong Link
1 CVE-2020-7693: SockJS 0.3.19 Denial of Service POC https://github.com/andsnw/sockjs-dos-py POC Details
2 POC For CVE-2020-7693 (Testing on Version sockjs@0.3.18) https://github.com/thewindghost/CVE-2020-7693 POC Details
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III. Intelligence Information for CVE-2020-7693

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Patches & Fixes for CVE-2020-7693 (2)

Vendor Advisories for CVE-2020-7693 (2)

Other References for CVE-2020-7693 (2)

Same Patch Batch · n/a · 2020-07-09 · 16 CVEs total

CVE-2020-7692 7.4 HIGH Improper Authorization
CVE-2020-9377 D-Link DIR-610 代码注入漏洞
CVE-2020-9376 D-Link DIR-610 信息泄露漏洞
CVE-2020-7457 FreeBSD 资源管理错误漏洞
CVE-2020-7458 FreeBSD 缓冲区错误漏洞
CVE-2020-13992 Klemen Stirn HESK 跨站脚本漏洞
CVE-2020-13993 Klemen Stirn HESK SQL注入漏洞
CVE-2020-13994 Klemen Stirn HESK 代码注入漏洞
CVE-2020-10756 libslirp 缓冲区错误漏洞
CVE-2020-15526 Red Gate Software Redgate SQL Monitor 信息泄露漏洞
CVE-2020-13131 Yubico libykpiv 缓冲区错误漏洞
CVE-2020-13132 Yubico libykpiv 加密问题漏洞
CVE-2020-15000 Yubico YubiKey 5 安全漏洞
CVE-2020-15001 Yubico YubiKey 5 NFC 信息泄露漏洞
CVE-2020-15299 WordPress KingComposer 跨站脚本漏洞

IV. Related Vulnerabilities

Same vendor: n/a

V. Comments for CVE-2020-7693

Anonymous User
2026-01-15 06:09:34

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