CVE-2021-3355 EXPLOIT
5.4
MEDIUM · CVSS 3.1 · EPSS 7.3% (pctl 94)
Patch early
A public exploit exists.
Description
A stored-self XSS exists in LightCMS v1.3.4, allowing an attacker to execute HTML or JavaScript code in a vulnerable Title field to /admin/SensitiveWords.
Scoring
| CVSS | 5.4 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| EPSS | 7.25% — more likely to be exploited than 94% of all CVEs |
| Weakness | CWE-79 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2021-02-24 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| lightcms project | lightcms |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | LightCMS 1.3.4 - 'exclusive' Stored XSS | 2021-02-26 |
References
- http://packetstormsecurity.com/files/161562/LightCMS-1.3.4-Cross-Site-Scripting.html
- https://gist.github.com/Peithon/1c628ded0c4fc96c6331c3cce1d0c69b
- https://github.com/eddy8/LightCMS/issues/18
- https://www.exploit-db.com/exploits/49598
- http://packetstormsecurity.com/files/161562/LightCMS-1.3.4-Cross-Site-Scripting.html
- https://gist.github.com/Peithon/1c628ded0c4fc96c6331c3cce1d0c69b
- https://github.com/eddy8/LightCMS/issues/18
- https://www.exploit-db.com/exploits/49598
→ the Explorer · watch your stack · NVD