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CVE-2021-47923— OpenCart 3.0.3.8 Session Fixation via OCSESSID Cookie

Quick assessment

Affected
Opencart opencart
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenCart是中国OpenCart团队的一套开源的电子商务系统。该系统提供产品评论、产品评分、产品添加等模块。 OpenCart 3.0.3.8版本存在安全漏洞，该漏洞源于会话固定漏洞，允许攻击者通过向OCSESSID cookie注入任意值劫持用户会话，攻击者可以设置服务器接受并维护的恶意OCSESSID cookie值，导致会话接管和未经授权访问用户账户。

CVSS 9.8 · Critical EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 1

VendorProduct Version RangeStatus
Opencart opencart 3.0.3.8 affected
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I. Basic Information for CVE-2021-47923

Vulnerability Information
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Vulnerability Title
OpenCart 3.0.3.8 Session Fixation via OCSESSID Cookie
Source: CVE Program / CVE List V5
Vulnerability Description
OpenCart 3.0.3.8 contains a session fixation vulnerability that allows attackers to hijack user sessions by injecting arbitrary values into the OCSESSID cookie. Attackers can set malicious OCSESSID cookie values that the server accepts and maintains, enabling session takeover and unauthorized access to user accounts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
OpenCart 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenCart是中国OpenCart团队的一套开源的电子商务系统。该系统提供产品评论、产品评分、产品添加等模块。 OpenCart 3.0.3.8版本存在安全漏洞，该漏洞源于会话固定漏洞，允许攻击者通过向OCSESSID cookie注入任意值劫持用户会话，攻击者可以设置服务器接受并维护的恶意OCSESSID cookie值，导致会话接管和未经授权访问用户账户。
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
Opencart opencart 3.0.3.8 -

II. Public POCs for CVE-2021-47923

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III. Intelligence Information for CVE-2021-47923

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Vendor Advisories for CVE-2021-47923 (1)

Exploits & Public PoCs for CVE-2021-47923 (1)

Same Patch Batch · Opencart · 2026-05-10 · 3 CVEs total

CVE-2021-47946 5.3 MEDIUM OpenCart 3.0.3.6 Account Takeover via Cross Site Request Forgery
CVE-2021-47953 4.3 MEDIUM OpenCart 3.0.3.7 Cross-Site Request Forgery via account/password

IV. Related Vulnerabilities

Same product: opencart
Same vendor: Opencart
Same weakness: CWE-290

V. Comments for CVE-2021-47923

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