How severe is CVE-2023-28326?

CVE-2023-28326 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-28326 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28326?

CVE-2023-28326 affects Apache Openmeetings. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28326?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-28326 published?

CVE-2023-28326 was published on 2023-03-28 and last updated on 2026-06-17.

CVE-2023-28326

CVE-2023-28326 is a critical-severity vulnerability in Apache Openmeetings with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Apache Openmeetings
Published: 2023-03-28
Last modified: 2026-06-17

Description

Vendor: The Apache Software Foundation Versions Affected: Apache OpenMeetings from 2.0.0 before 7.0.0 Description: Attacker can elevate their privileges in any room

Frequently asked questions

What is CVE-2023-28326?: Vendor: The Apache Software Foundation Versions Affected: Apache OpenMeetings from 2.0.0 before 7.0.0 Description: Attacker can elevate their privileges in any room
How severe is CVE-2023-28326?: CVE-2023-28326 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-28326 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28326?: CVE-2023-28326 affects Apache Openmeetings. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28326?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-28326 published?: CVE-2023-28326 was published on 2023-03-28 and last updated on 2026-06-17.

References

https://lists.apache.org/thread/r9vn12dp5yofn1h3wd5x4h7c3vmmr5d9

Affected products (1)

cpe:2.3:a:apache:openmeetings:*:*:*:*:*:*:*:*

More vulnerabilities in Apache Openmeetings

CVE-2017-7664 — Critical (CVSS 10.0): Uploaded XML documents were not correctly validated in Apache OpenMeetings 3.1.0.
CVE-2024-54676 — Critical (CVSS 9.8): Vendor: The Apache Software Foundation Versions Affected: Apache OpenMeetings from 2.1.0 before 8.0.0 Description:…
CVE-2016-8736 — Critical (CVSS 9.8): Apache OpenMeetings before 3.1.2 is vulnerable to Remote Code Execution via RMI deserialization attack.
CVE-2017-7673 — Critical (CVSS 9.8): Apache OpenMeetings 1.0.0 uses not very strong cryptographic storage, captcha is not used in registration and forget…
CVE-2017-7681 — High (CVSS 8.8): Apache OpenMeetings 1.0.0 is vulnerable to SQL injection. This allows authenticated users to modify the structure of…
CVE-2017-7666 — High (CVSS 8.8): Apache OpenMeetings 1.0.0 is vulnerable to Cross-Site Request Forgery (CSRF) attacks, XSS attacks, click-jacking, and…

All CVEs affecting Apache Openmeetings →

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities

CVE-2026-54309 — Critical (CVSS 10.0): n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP…
CVE-2026-50242 — Critical (CVSS 10.0): In JetBrains Hub before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429…
CVE-2026-49257 — Critical (CVSS 10.0): mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1…
CVE-2026-46846 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46803 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46800 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites).…

Browse all CWE-306 (Missing Authentication for Critical Function) vulnerabilities →