CVE-2021-47923CWE-290

CVE-2021-47923

Critical · published May 10, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
35.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00423 · 35.5th percentile
Weakness
CWE-290 · Authentication Bypass by Spoofing
Published
2026-05-10T17:16Z
References (3)
https://www.exploit-db.com/exploits/50555 · [email protected]https://www.opencart.com/ · [email protected]https://www.vulncheck.com/advisories/opencart-session-fixation-via-ocsessid-cookie · [email protected]
EPSS history
Timeline
  • 10 MAY 12:43Z
    OpenCart 3.0.3.8 Session Fixation via OCSESSID Cookie
    cvelistv5