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Made with love by Amit Schendel & Alon Barad

CVE-2026-21446

Bagisto's Open House: How an AJAX Header Stole the Admin Panel

Alon Barad
Alon Barad
Software Engineer

Jan 2, 2026·5 min read·42 visits

Executive Summary (TL;DR)

Bagisto left the installer routes active after installation but tried to hide them with a redirect. The catch? The redirect only applied to standard browser requests. By adding a simple `X-Requested-With: XMLHttpRequest` header, attackers can bypass the check, access the installer API, and overwrite the primary administrator account.

A logic flaw in Bagisto's installer middleware allows unauthenticated attackers to re-run the installation process via AJAX requests, enabling complete administrative takeover.

Official Patches

BagistoOfficial patch commit

Fix Analysis (1)

Technical Appendix

CVSS Score
9.8/ 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Systems

Bagisto eCommerce Platform

Affected Versions Detail

Product
Affected Versions
Fixed Version
Bagisto
Webkul
>= 2.3.0, < 2.3.102.3.10
AttributeDetail
CWE IDCWE-306
CVSS Score9.8 (Critical)
Attack VectorNetwork (Remote)
AuthenticationNone
ImpactAccount Takeover / RCE
Exploit StatusPoC Available

MITRE ATT&CK Mapping

T1190Exploit Public-Facing Application
Initial Access
T1078Valid Accounts
Defense Evasion
CWE-306
Missing Authentication for Critical Function

The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Known Exploits & Detection

N/AExploit methodology described in GHSA advisory

Vulnerability Timeline

CVE Published
2026-01-02
Patch Released (v2.3.10)
2026-01-02

References & Sources

  • [1]GitHub Security Advisory
  • [2]NVD Record

Attack Flow Diagram

Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.

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