Vulnerability record

CVE-2020-8644

PlaySMS Server-Side Template Injection Vulnerability

CriticalExploitation confirmedCISA KEV

What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run PlaySMS, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by May 3, 2022.

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.

PlaySMS before 1.4.3 does not sanitize inputs from a malicious string.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Products affected by this vulnerability, with versions and the source of each entry
Product	Vendor	Affected versions	Fixed in	Source
PlaySMS	PlaySMS	< 1.4.3	1.4.3	KEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog.

Developments from the last 30 days, newest first.

CVSS scoredUpdateKEVSep 30, 2026
CVE-2020-8644 scored CVSS 9.8: PlaySMS PlaySMS, PlaySMS Server-Side Template Injection Vulnerability
CISA lists this as exploited in the wild. Unpatched PlaySMS systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database

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We have not published a story about this vulnerability yet.

nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2020-8644
packetstormsecurity.com http://packetstormsecurity.com/files/157106/PlaySMS-index.php-Unauthenticated-Template-Injection-Code-Executio…
forum.playsms.org https://forum.playsms.org/t/playsms-1-4-3-has-been-released/2704
playsms.org https://playsms.org/2020/02/05/playsms-1-4-3-has-been-released/
research.nccgroup.com https://research.nccgroup.com/2020/02/11/technical-advisory-playsms-pre-authentication-remote-code-execution-c…
cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8644