What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-10 · updated 2026-10-06
• Weakness: CWE-290

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.

Affected products

• OpenCart: 3.0.3.8

References

• https://www.exploit-db.com/exploits/50555
• https://www.opencart.com/
• https://www.vulncheck.com/advisories/opencart-session-fixation-via-ocsessid-cookie

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