PlaySMS before 1.4.3 does not sanitize inputs from a malicious string.
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Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.
PlaySMS before 1.4.3 does not sanitize inputs from a malicious string.
February 5, 2020
November 7, 2025
Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8644MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
Python script to exploit PlaySMS before 1.4.3
Open source ↗PlaySMS - index.php Unauthenticated Template Injection Code Execution (Metasploit)
Open source ↗PlaySMS index.php Unauthenticated Template Injection Code Execution
Open source ↗playSMS <1.4.3 - Remote Code Execution
Open source ↗See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-8644
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CWE-20