CVE-2023-36134

CRITICALNVD 9.89.8—

9.8

In PHP Jabbers Class Scheduling System 1.0, lack of verification when changing an email address and/or password (on the Profile Page) allows remote attackers to take over accounts.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 74.8%
KEV: Not listed

Published

August 4, 2023

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated May 24, 2026

No patch confirmed yet.

generic

Class Scheduling System | Course Booking System | PHPJabbers

https://www.phpjabbers.com/class-scheduling-system

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-345Insufficient Verification of Data Authenticity

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-24 20:09 UTCEG score recompute
2026-05-24 20:09 UTCGHSA enrichment
2026-05-24 16:52 UTCepss_batch

Frequently asked(5)

What is CVE-2023-36134?

CVE-2023-36134 is a critical vulnerability published on August 4, 2023. In PHP Jabbers Class Scheduling System 1.0, lack of verification when changing an email address and/or password (on the Profile Page) allows remote attackers to take over accounts.

When was CVE-2023-36134 disclosed?

CVE-2023-36134 was first published in the National Vulnerability Database on August 4, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-36134 actively exploited?

CVE-2023-36134 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 74.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-36134?

CVE-2023-36134 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2023-36134?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-36134, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-36134

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

Class Scheduling System | Course Booking System | PHPJabbers

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-36134?

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Frequently asked(5)

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