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Critical · 9.8 CVE-2021-47923 EUVD-2021-34785GHSA-5hhh-fq62-xfww

OpenCart 3.0.3.8 Session Fixation via OCSESSID Cookie

Published May 10, 2026 · Updated May 11, 2026 · Assigned by VulnCheck

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

VendorProductAffectedFixed
Opencart opencart 3.0.3.8 —

References