CVE-2018-5315: The Wachipi WP Events Calendar plugin 1.0 for WordPress has SQL Injection via the event_id parameter to event.

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-5315 is a critical-severity flaw (CVSS 9.8) affecting wp events calendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Wachipi WP Events Calendar plugin 1.0 for WordPress has SQL Injection via the event_id parameter to event.php.

Why this priority

Critical severity
EPSS top 8%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	4.9% (top 8%)
CISA exploited list	No
Weakness	CWE-89
Published	2018-01-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: wp events calendar project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-01-12 17:29 UTCPublished CVE record published
2026-06-17 02:00 UTCUpdated Record last modified

wp events calendar project wp events calendar DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy wp-events-calendar || rpm -q wp-events-calendar || wp-events-calendar --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison wp-events-calendar sudo apt install wp-events-calendar=<VERSION_BEFORE_1.0> sudo apt-mark hold wp-events-calendar

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list wp-events-calendar sudo dnf downgrade wp-events-calendar-<VERSION_BEFORE_1.0> sudo dnf versionlock add wp-events-calendar

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: WordPress Plugin Events Calendar - 'event_id' SQL Injection

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-5315?

wp events calendar: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-5315 being exploited?

CVE-2018-5315 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-5315 affect?

CVE-2018-5315 affects wp events calendar. Severity is critical (CVSS 9.8). The Wachipi WP Events Calendar plugin 1.0 for WordPress has SQL Injection via the event_id parameter to event.php.

How urgent is CVE-2018-5315?

Priority 67/100. Critical severity; EPSS top 8%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities · PHP vulnerabilities

References

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