Strategic Overview
- Status
- Patched in 3.5.7
- Affected Plugin
- AccessAlly
- Affected Version
<= 3.5.6- CVSS
- 5.3Medium
- Weakness type
- CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
- CVE
CVE-2021-24226
At a glance
CVE-2021-24226 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the AccessAlly WordPress plugin, affecting versions <= 3.5.6. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.5.7; sites on affected versions should update now. Disclosed March 2021, reported by Till Krüss.
Vulnerability Overview
In the AccessAlly WordPress plugin before 3.5.7, the file "resource/frontend/product/product-shortcode.php" responsible for the [accessally_order_form] shortcode is dumping serialize($_SERVER), which contains all environment variables. The leakage occurs on all public facing pages containing the [accessally_order_form] shortcode, no login or administrator role is required.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Reaching this weakness in AccessAlly <= 3.5.6 takes a caller who can reach the endpoint. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.
The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For AccessAlly the fix is 3.5.7: builds <= 3.5.6 are affected, anything from 3.5.7 onward is not.
Remediation
Update to version 3.5.7, or a newer patched version
How does WordSec protect against this?
The fix is the thing that ends this: AccessAlly 3.5.7 closes this, and updating the plugin is the step that ends it.
- Alerts
External References
Related records
Other vulnerabilities in AccessAlly
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