Cyber Resilience

CVE-2026-33005

Apache Openmeetings 3.1.0 – 9.0.0

Published
09 April 2026
Modified
15 April 2026
Patch / advisory
View advisory
CVSS Score v3.1 4.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS Score 0.0042 35th percentile
Risk Priority 37 floored blend · peak EPSS

Summary

CVE-2026-33005 is a medium-severity Improper Handling of Insufficient Privileges (CWE-274) vulnerability in Apache Openmeetings. Its CVSS base score is 4.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 35th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to AC-24 (Access Control Decisions) and AC-25 (Reference Monitor) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A10:2025 Mishandling of Exceptional Conditions

EU & UK References

Vulnerability Data

Improper Handling of Insufficient Privileges vulnerability in Apache OpenMeetings. Any registered user can query web service with their credentials and get files/sub-folders of any folder by ID (metadata only NOT contents). Metadata includes id, type, name and some other field.…

more

Full list of fields get be checked at FileItemDTO object. This issue affects Apache OpenMeetings: from 3.10 before 9.0.0. Users are recommended to upgrade to version 9.0.0, which fixes the issue.

CWE(s)
CWE-274

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1548 Abuse Elevation Control Mechanism Privilege Escalation
Adversaries may circumvent mechanisms designed to control privilege elevation to gain higher-level permissions.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-28936Same product: Apache Openmeetings
CVE-2023-29246Same product: Apache Openmeetings
CVE-2023-29032Same product: Apache Openmeetings
CVE-2026-49488Same product: Apache Openmeetings
CVE-2024-54676Same product: Apache Openmeetings
CVE-2026-34020Same product: Apache Openmeetings
CVE-2023-28326Same product: Apache Openmeetings
CVE-2026-62764Same vendor: Apache
CVE-2026-33266Same product: Apache Openmeetings
CVE-2024-0106Shared CWE-274

Affected Assets

apache
openmeetings
3.1.0 — 9.0.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 5 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

AC-25 Reference Monitor good match

Always-invoked reference monitor guarantees privilege checks occur and cannot be bypassed or mishandled.

AC-3 Access Enforcement good match

Enforces approved authorizations so insufficient privileges produce a proper denial instead of mishandled failure.

AC-24 Access Control Decisions good match

Requires every access request to be decided against current authorizations, preventing ad-hoc privilege handling.

AC-6 Least Privilege partial match

Least-privilege assignment reduces the frequency of operations that encounter insufficient privileges.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-05 mostly match
prevents

Enforcing least-privilege access policies directly prevents improper handling of insufficient privileges.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.2 Privileged access rights mostly match
prevents

Privileged-access-rights control directly limits the situations in which insufficient privileges can occur.

A.8.3 Information access restriction mostly match
prevents

Information-access-restriction mechanisms enforce least-privilege checks that mitigate the weakness at runtime.

A.5.15 Access control partial match
prevents

Access control policy defines privilege boundaries but does not guarantee correct runtime handling when privileges prove insufficient.

A.5.18 Access rights partial match
prevents

Access-rights provisioning and review reduce privilege gaps, yet do not address the software’s failure to handle insufficient privileges gracefully.

A.8.18 Use of privileged utility programs partial match
mitigates

Restricting privileged utilities reduces exposure but does not address how the application handles privilege shortfalls.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC practices can include privilege checks, yet the control itself does not mandate handling of insufficient privileges.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 9 (2 rules)
  • V-271452 OL 9 must use a Linux Security Module configured to enforce limits on system services. prevents CWE-274
  • V-271640 OL 9 must be configured so that the Network File System (NFS) is configured to use RPCSEC_GSS. prevents CWE-274
RHEL 9 (1 rule)
  • V-258078 RHEL 9 must use a Linux Security Module configured to enforce limits on system services. prevents CWE-274

References