🛡️ CVE-2026-34020 — openmeetings

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: None.
• Availability impact: None.

Weakness class

CVE-2026-34020 is classified as CWE-598: Use of HTTP Request With Sensitive Query String. The web application uses an HTTP method to process a request, but the request includes sensitive information in the query string.

Affected software

CVE-2026-34020 is recorded against 2 packages.

• openmeetings (from 3.1.3 up to 9.0.0)
• org.apache.openmeetings:openmeetings-parent (from 3.1.3 up to 9.0.0)

Timeline and source

Published on 9 April 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

lists.apache.org
owasp.org
www.openwall.com

Other advisories for this package

openmeetings has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-49488 (6.5 Medium, published 14 Jul 2026)
• CVE-2026-33266 (7.5 High, published 9 Apr 2026)
• CVE-2026-33005 (4.3 Medium, published 9 Apr 2026)
• CVE-2024-54676 (9.8 Critical, published 8 Jan 2025)
• CVE-2023-29032 (8.1 High, published 12 May 2023)
• CVE-2023-29246 (7.2 High, published 12 May 2023)
• CVE-2023-28936 (5.3 Medium, published 12 May 2023)
• CVE-2023-28326 (9.8 Critical, published 28 Mar 2023)

Same weakness in other software

These advisories are the same class of weakness (CWE-598: Use of HTTP Request With Sensitive Query String) in other software:

• CVE-2026-14838 (7.4 High, published 4 Aug 2026)
• CVE-2026-47768 (5.5 Medium, published 28 Jul 2026)
• CVE-2026-16207 (3.7 Low, published 19 Jul 2026)
• CVE-2026-62386 (7.5 High, published 17 Jul 2026)
• CVE-2026-15322 (7.5 High, published 17 Jul 2026)
• CVE-2026-9592 (published 17 Jul 2026)
• CVE-2026-58656 (7.5 High, published 8 Jul 2026)
• CVE-2026-10078 (2.7 Low, published 29 May 2026)

Details

Affected Packages

References