CVE-2017-20268

Joomla! Component Zap Calendar Lite 4.3.4 SQL Injection

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.

Affected

Zcontent · Zap Calendar Lite

CVSS v4.0 VULNCHECK

8.8 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

EPSS

0.49% chance of exploitation in the next 30 days, 41st percentile

Published

2026-06-19

Updated

2026-07-15

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/42500

Security advisories

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

References

• CVE Record
• NVD entry