Medium severity5.4NVD Advisory· Published Jan 21, 2026· Updated May 12, 2026
CVE-2021-47870
CVE-2021-47870
Description
GetSimple CMS My SMTP Contact Plugin 1.1.2 suffers from a Stored Cross-Site Scripting (XSS) vulnerability. The plugin attempts to sanitize user input using htmlspecialchars(), but this can be bypassed by passing dangerous characters as escaped hex bytes. This allows attackers to inject arbitrary client-side code that executes in the administrator's browser when visiting a malicious page.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- cpe:2.3:a:get-simple:getsimplecms:1.1.2:*:*:*:*:*:*:*
- Range: = 1.1.2
Patches
Vulnerability mechanics
References
3- www.exploit-db.com/exploits/49798nvdExploitThird Party AdvisoryVDB Entry
- www.vulncheck.com/advisories/getsimple-cms-my-smtp-contact-plugin-stored-xssnvdThird Party Advisory
- get-simple.infonvdProduct
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