7.5

CVE-2026-33266: apache software foundation apache openmeetings Use of Hard-coded Cryptographic Key

CVSS: 7.5v3.1HighAnalyzed
AliasesGHSA-wqxq-w68r-wg85
Published 09-04-2026Last modified 10-04-2026
Open JSON

Vulnerability summary

CVE-2026-33266 is a high (CVSS 7.5) Use of Hard-coded Cryptographic Key vulnerability in apache software foundation apache openmeetings. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.34%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-04-2026
    PublishedVulnerability first disclosed.
  2. 10-04-2026
    Last modifiedVulnerability information updated.

Description

Use of Hard-coded Cryptographic Key vulnerability in Apache OpenMeetings. The remember-me cookie encryption key is set to default value in openmeetings.properties and not being auto-rotated. In case OM admin hasn't changed the default encryption key, an attacker who has stolen a cookie from a logged-in user can get full user credentials. This issue affects Apache OpenMeetings: from 6.1.0 before 9.0.0. Users are recommended to upgrade to version 9.0.0, which fixes the issue.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

26%

Versus all other CVEs

30-day change

+0.11 pp

From 0.23% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.34%

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

Apache1 product
Apache software foundation1 product
Org.apache.openmeetings1 product
  • openmeetings-parent≥ 6.1.0, < 9.0.0

3 vendors · 3 products

References

4 links