CVE-2021-47923
OpenCart 3.0.3.8 has a session fixation flaw that lets attackers set the OCSESSID cookie to any value the server will accept. This allows them to take over a user’s session and access their account without authorization. The vulnerability is critical because it can be exploited remotely with no authentication.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
OpenCart 3.0.3.8 – the e‑commerce platform’s session handling code.
Real-world impact
An attacker can hijack a logged‑in user’s session, gaining full access to that user’s account and any sensitive data or administrative functions the account has permission for.
Why this severity
The CVSS score of 9.3 reflects the high impact of the vulnerability: it allows remote attackers to take over user sessions (high confidentiality, integrity, and availability impact) with no user interaction or special privileges required.
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources
Timeline
- May 10, 2026 · May 10, 2026PublishedDisclosed and added to the National Vulnerability Database.
- Jul 25, 2026 · 11d agoAdvisory updatedThe NVD record was last revised.