CVE-2023-51339: A lack of rate limiting in the 'Forgot Password' feature of PHPJabbers Event Ticketing System v1.0 allows atta

This month

MEDIUM 6.5DOWNGRADE

CVE-2023-51339 is a medium-severity flaw (CVSS 6.5) affecting event ticketing system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A lack of rate limiting in the 'Forgot Password' feature of PHPJabbers Event Ticketing System v1.0 allows attackers to send an excessive amount of email for a legitimate user, leading to a possible Denial of Service (DoS) via a large amount of generated e-mail messages.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-770
Published	2025-02-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: phpjabbers

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

Am I affected?

Timeline

2025-02-20 19:15 UTCPublished CVE record published
2026-06-17 06:40 UTCUpdated Record last modified

phpjabbers event ticketing 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-ticketing-system || rpm -q event-ticketing-system || event-ticketing-system --version

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

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

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

dnf --showduplicates list event-ticketing-system sudo dnf downgrade event-ticketing-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add event-ticketing-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-2023-51339?

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

Is CVE-2023-51339 being exploited?

CVE-2023-51339 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-2023-51339 affect?

CVE-2023-51339 affects event ticketing system. Severity is medium (CVSS 6.5). A lack of rate limiting in the 'Forgot Password' feature of PHPJabbers Event Ticketing System v1.0 allows attackers to send an excessive amount of email for a legitimate user, leading to a possible Denial of Service (DoS) via a large amount

How urgent is CVE-2023-51339?

Priority 41/100. Public exploit reference

Related CVEs

CVE-2023-51337 MEDIUM 5.4 DOWNGRADE PHPJabbers Event Ticketing System v1.0 is vulnerable to Reflected Cross-Site Scripting (XSS) in "lid" paramete
CVE-2023-51306 MEDIUM 5.4 DOWNGRADE PHPJabbers Event Ticketing System v1.0 is vulnerable to Multiple Stored Cross-Site Scripting (XSS) in the "nam

References

← Back to latest CVEs