---
id: "CVE-2020-8644"
kind: "vulnerability"
aliases: ["CVE-2020-8644"]
title: "PlaySMS PlaySMS: PlaySMS Server-Side Template Injection Vulnerability"
severity: "critical"
cvss: 9.8
epss: 0.86689
exploited: true
status: "open"
category: "package"
products: [{"name": "PlaySMS PlaySMS", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "package", "playsms", "self-hosted", "sms-gateway"]
not_affected_if: ["unknown"]
published_at: "2020-02-05T22:15:11+00:00"
first_seen_at: "2026-10-23T19:11:53+00:00"
updated_at: "2026-10-23T21:57:34+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-8644", "first_seen_at": "2026-10-23T19:11:53+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-8644", "first_seen_at": "2026-10-23T19:13:43+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8644", "first_seen_at": "2026-10-23T21:57:34+00:00"}]
---

# PlaySMS PlaySMS: PlaySMS Server-Side Template Injection Vulnerability

PlaySMS, an open-source SMS gateway web application, has a server-side template injection flaw that lets remote users inject template code. An attacker can run code on the server hosting PlaySMS.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:PlaySMS PlaySMS affected ? fixed ?

## Fix

Apply the vendor's updates for PlaySMS per the vendor instructions referenced by CISA; the fixed version is unknown from the sources.

## Timeline

- 2026-10-23T19:11:53+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-8644
- 2026-10-23T19:13:43+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2020-8644
- 2026-10-23T21:57:34+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2020-8644

## From the sources

PlaySMS contains a server-side template injection vulnerability that allows for remote code execution.

CISA required action: Apply updates per vendor instructions.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_