Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2017-20273

CVE-2017-20273HIGH

Joomlashowroom Event Registration Pro Calendar — Joomla Event Registration Pro Calendar 4.1.3 SQL Injection

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   H   L   N    8.8   .0043   35.3     —

AFFECTED
  Product                          Versions  Fixed
  Event Registration Pro Calendar  4.1.3 –   —

TIMELINE
  Jun 19  Reserved by VulnCheck
  Jun 19  Published (CNA: VulnCheck)
  Aug 21  EXPLOIT PUBLISHED — CVE-2017-20273 (Joomlashowroom Event Registration Pro Calendar). Public exploit reference added.

CWE-89 · CNA: VulnCheck · CVSS v4.0 · 2 references · NVD status: Analyzed

Description

Joomla Event Registration Pro Calendar 4.1.3 contains an SQL injection vulnerability that allows unauthenticated attackers to execute arbitrary SQL queries by injecting malicious code through the id parameter. Attackers can send GET requests to index.php with option=com_registrationpro&view=category&id parameter containing SQL injection payloads to extract sensitive database information.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 19, 2026	Reserved	Reserved by VulnCheck
June 19, 2026	Published	Published (CNA: VulnCheck)
August 21, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2017-20273 (Joomlashowroom Event Registration Pro Calendar). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Joomlashowroom	Event Registration Pro Calendar	—	4.1.3	—

Weaknesses

CWE-89

References (2)

https://www.exploit-db.com/exploits/42416 [Exploit, VDB Entry]
https://www.vulncheck.com/advisories/joomla-event-registration-pro-calendar-sql-injection [Third Party Advisory]

Authoritative record: CVE-2017-20273 at cve.org

Vendors: joomlashowroom

Weaknesses: CWE-89

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2017-20273 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.