Medium severity · published Aug 21, 2026
CVE-2025-15671
Welcart e-Commerce < 2.12.1 - Session Fixation via uscesid Parameter
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
The Welcart e-Commerce WordPress plugin before 2.12.1 does not regenerate the session identifier on authentication and sets the session identifier from a user-supplied request parameter, allowing an unauthenticated attacker to fixate a shop member's session and take over their customer account after the victim logs in through an attacker-crafted request.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
Welcart e-Commerce ·
before 2.12.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-15671
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-15671
wpscan.com
https://wpscan.com/vulnerability/3b2d4e7f-1e2a-4712-af9b-50080106d52c/
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