PatchTheCVECVE-2025-3516: The Simple Lightbox WordPress plugin before 2.9.4 does not validate and escape some of its attributes before o
CVE-2025-3516 is a medium-severity flaw (CVSS 5.9) affecting simple lightbox. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Simple Lightbox WordPress plugin before 2.9.4 does not validate and escape some of its attributes before outputting them back in a page/post, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.9 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 76%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2025-05-16 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-3516?
simple lightbox: upgrade to 2.9.4. Exact commands for each OS are on this page.
Is CVE-2025-3516 being exploited?
CVE-2025-3516 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-3516 affect?
CVE-2025-3516 affects simple lightbox. Severity is medium (CVSS 5.9). The Simple Lightbox WordPress plugin before 2.9.4 does not validate and escape some of its attributes before outputting them back in a page/post, which could allow users with the contributor role and above to perform Stored Cross-Site Scrip
How urgent is CVE-2025-3516?
Priority 32/100. Public exploit reference