5.3

CVE-2023-38327: egroupware Observable Discrepancy

CVSS: 5.3v3.1MediumAnalyzed
Published 11-07-2025Last modified 15-07-2025
Open JSON

Vulnerability summary

CVE-2023-38327 is a medium (CVSS 5.3) Observable Discrepancy vulnerability in egroupware. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 27.7% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.35%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-07-2025
    PublishedVulnerability first disclosed.
  2. 15-07-2025
    Last modifiedVulnerability information updated.

Description

An issue was discovered in eGroupWare 17.1.20190111. A User Enumeration vulnerability exists under calendar/freebusy.php, which allows unauthenticated remote attackers to enumerate the users of web applications based on server response.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

+0.05 pp

From 0.30% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.35%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Egroupware1 product

1 vendor · 1 product

References

1 links