XSS in I13websolution Thumbnail Slider With Lightbox
CVE-2023-5621
The Thumbnail Slider With Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Image Title field in versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.004 (32.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N.
Affected products
- I13websolution Thumbnail_slider_with_lightbox — versions 1.0
- Nik00726 Thumbnail Slider With Lightbox — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@wordfence.com (Third Party Advisory)
- security@wordfence.com (Product)
- security@wordfence.com (Product)
Frequently asked questions
- What is CVE-2023-5621?
- CVE-2023-5621 is a medium-severity vulnerability in I13websolution Thumbnail Slider With Lightbox, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2023-10-18.
- How severe is CVE-2023-5621?
- Medium severity. CVSS v3 base score is 4.4 out of 10.
- Is CVE-2023-5621 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.