A stored-self XSS exists in LightCMS v1.3.4, allowing an attacker to execute HTML or…
Priority LOW 35CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
EPSS 0.0725 94th percentileScored 2026-11-07
Public exploit Yes 4 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:lightcms_project:lightcms:1.3.4:*:*:*:*:*:*:* | 1.3.4 | Vulnerable | Lightcms Project |
- cpe:2.3:a:lightcms_project:lightcms:1.3.4:*:*:*:*:*:*:* Versions 1.3.4 Vulnerable ·Lightcms Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-3355
- 2026-10-03 Alias added: GHSA-h87g-cj47-crv7
References
More Lightcms Project Lightcms vulnerabilities
- TI-2023-11891 LightCMS v1.3.7 was discovered to contain a remote code execution (RCE) vulnerability via the image:make function. CVSS 3.1CRITICAL 9.8
- TI-2026-23402 A reflected cross-site scripting (XSS) vulnerability in the /admin/menus component of… CVSS 3.1MEDIUM 6.1
- TI-2024-15065 LightCMS v2.0 is vulnerable to Cross Site Scripting (XSS) in the Content Management - Articles field. CVSS 3.1MEDIUM 5.4
- TI-2021-08673 LightCMS v1.3.5 contains a remote code execution vulnerability in… CVSS 3.1CRITICAL 9.8
- TI-2022-14516 A stored cross-site scripting (XSS) vulnerability in LightCMS v1.3.11 allows attackers to… CVSS 3.1MEDIUM 4.8
Sources
- CVE-2021-3355 · CVE Program
- CVE-2021-3355 · NVD
- FIRST EPSS
- GHSA-h87g-cj47-crv7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences