CVE-2025-56243: A Cross-Site Scripting (XSS) vulnerability was found in the register.php page of PuneethReddyHC Event Manageme

Routine

MEDIUM 6.1DOWNGRADE

CVE-2025-56243 is a medium-severity flaw (CVSS 6.1) affecting event management system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Cross-Site Scripting (XSS) vulnerability was found in the register.php page of PuneethReddyHC Event Management System 1.0, where the event_id GET parameter is improperly handled. An attacker can craft a malicious URL to execute arbitrary JavaScript in the victim s browser by injecting code into this parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-10-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: puneethreddyhc

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

Am I affected?

Timeline

2025-10-07 17:15 UTCPublished CVE record published
2026-06-17 09:42 UTCUpdated Record last modified

puneethreddyhc event management system 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 event-management-system || rpm -q event-management-system || event-management-system --version

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

apt-cache madison event-management-system sudo apt install event-management-system=<VERSION_BEFORE_1.0> sudo apt-mark hold event-management-system

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

dnf --showduplicates list event-management-system sudo dnf downgrade event-management-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add event-management-system

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.

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-2025-56243?

event management system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-56243 being exploited?

CVE-2025-56243 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-2025-56243 affect?

CVE-2025-56243 affects event management system. Severity is medium (CVSS 6.1). A Cross-Site Scripting (XSS) vulnerability was found in the register.php page of PuneethReddyHC Event Management System 1.0, where the event_id GET parameter is improperly handled. An attacker can craft a malicious URL to execute arbitrary

How urgent is CVE-2025-56243?

Priority 30/100. Public exploit reference

Software pages

PHP vulnerabilities

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References

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