CVE-2025-15671

Welcart e-Commerce < 2.12.1 - Session Fixation via uscesid Parameter

MEDIUM
5.4
CVSS Score
Published: August 21, 2026 at 06:00 AM UTC
Updated: September 29, 2026 at 10:10 AM UTC
1 product affected across 1 vendorWelcart e-Commerce

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

60%
v < 2.12.1
Affected range stops below 2.12.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical Description
Source: cverecord
https://wpscan.com/vulnerability/3b2d4e7f-1e2a-4712-af9b-50080106d52c/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-287

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