CVE-2017-20273Public exploitNetwork attack vector

Database disclosure via unauthenticated category-id SQL injection

Published Jun 19, 2026 · Updated Jun 19, 2026

SQL injection in Event Registration Pro Calendar 4.1.3 allows remote attackers to read database data through a crafted category id. The category view incorporates the attacker-controlled id parameter into a database query without neutralizing SQL syntax. No authentication or user interaction is required, and the published UNION payload enumerates table and column names to extract database information.

CVSS severity8.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Event Registration Pro Calendar 4.1.3 allows remote attackers to read database data through a crafted category id. The category view incorporates the attacker-controlled id parameter into a database query without neutralizing SQL syntax. No authentication or user interaction is required, and the published UNION payload enumerates table and column names to extract database information.

The record

CVE
CVE-2017-20273
Published
Jun 19, 2026
Updated
Jun 19, 2026
Vendor
JoomlaShowroom.com
Product
Event Registration Pro Calendar
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JoomlaShowroom.com · Event Registration Pro Calendarversion=4.1.3

Published CVSS scores

8.2VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
8.8VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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