CVE-2026-18317 json
Foxtool All-in-One: Contact chat button, Custom login, Media optimize images <= 2.5.3 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Plugin Settings Modification via 'option_key' Parameter of toggle_watermark AJAX Action
published 2026-09-18 52 d ago modified 2026-09-18 51 d ago also EUVD-2026-82743
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
The Foxtool All-in-One: Contact chat button, Custom login, Media optimize images plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.5.3. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify arbitrary subkeys of the foxtool_settings option, including enabling site-wide SVG uploads by toggling the media-up3 key, which can facilitate stored cross-site scripting via malicious SVG files.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 51 d ago
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- foxtheme Foxtool All-in-One: Contact chat button, Custom login, Media optimize images
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/10864109-8155-414e-be96-58e4dc2401b1?source=cve
- plugins.trac.wordpress.org /browser/foxtool/tags/2.5.3/inc/media.php#L868
- plugins.trac.wordpress.org /browser/foxtool/tags/2.5.3/inc/media.php#L854
- plugins.trac.wordpress.org /browser/foxtool/tags/2.5.3/inc/media.php#L926
- plugins.trac.wordpress.org /changeset?reponame=&old=3659917%40foxtool&new=3659917%40foxtool
Sources
- CVE List CVE-2026-18317
- NVD CVE-2026-18317
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.