How severe is CVE-2020-25026?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2020-25026 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Derhansen Event Management And Registration

CVE-2020-25026

The sf_event_mgt (aka Event management and registration) extension before 4.3.1 and 5.x before 5.1.1 for TYPO3 allows Information Disclosure (participant data, and event data via email) because of Broken Access Control.

Published 2020-09-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Derhansen Event Management And Registration

Public proof-of-concept exploits

404notf0und/CVE-Flow

References

typo3.org/help/security-advisories (Vendor Advisory)
typo3.org/security/advisory/typo3-ext-sa-2020-017 (Vendor Advisory)

Frequently asked questions

What is CVE-2020-25026?: CVE-2020-25026 is a medium-severity vulnerability in Derhansen Event Management And Registration. CVSS score: 4.3/10. Published 2020-09-02.
How severe is CVE-2020-25026?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2020-25026 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.