ICS Calendar <= 10.12.0.2 - Authenticated (Contributor+) Arbitrary File Read and Server-Side Request Forgery
Strategic Overview
- Status
- Patched in 10.12.0.3
- Affected Plugin
- ICS Calendar
- Affected Version
<= 10.12.0.2- CVSS
- 8.8High
- Weakness type
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CVE
CVE-2023-46784
At a glance
CVE-2023-46784 is a high-severity Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the ICS Calendar WordPress plugin, affecting versions <= 10.12.0.2. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 10.12.0.3; sites on affected versions should update now. Disclosed October 2023, reported by Muhammad Daffa.
Vulnerability Overview
The ICS Calendar plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 10.12.0.2. This makes it possible for authenticated attackers, with contributor-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information.
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 interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Reaching this weakness in ICS Calendar <= 10.12.0.2 takes an account at Contributor level or above. Path traversal happens when user-controlled text is used to build a filesystem path without being constrained to an intended directory, so sequences like ../ walk the resolved path somewhere else.
Depending on the operation, it means reading files outside the intended folder — wp-config.php being the usual target — or writing to and deleting paths the web server can touch. For ICS Calendar the fix is 10.12.0.3: builds <= 10.12.0.2 are affected, anything from 10.12.0.3 onward is not.
Remediation
Update to version 10.12.0.3, or a newer patched version
How does WordSec protect against this?
An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: ICS Calendar 10.12.0.3 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
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