9.8

CVE-2017-20028: humhub Improper Privilege Management

CVSS: 9.8v3.1CriticalModified
Published 09-06-2022Last modified 15-04-2025
Open JSON

Vulnerability summary

CVE-2017-20028 is a critical (CVSS 9.8) Improper Privilege Management vulnerability in humhub. EPSS estimates a 0.83% chance of exploitation in the next 30 days, higher than 56.8% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
0.83%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-06-2022
    PublishedVulnerability first disclosed.
  2. 15-04-2025
    Last modifiedVulnerability information updated.

Description

A vulnerability was found in HumHub 0.20.1/1.0.0-beta.3. It has been classified as critical. This affects an unknown part. The manipulation leads to privilege escalation. It is possible to initiate the attack remotely. Upgrading to version 1.0.0 is able to address this issue. It is recommended to upgrade the affected component.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.83%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

+0.02 pp

From 0.81% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.83%

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

Humhub1 product
Unspecified1 product

2 vendors · 2 products

References

2 links