CVE-2026-23934
An authenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend validate.api.exists action, leading to potential denial of service.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.1
- CVSS vector
- CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- EPSS probability
- 0.17%
- CWE
- CWE-405
- Published
- 2026-08-18
- Last modified
- 2026-08-18
Affected products
- Zabbix Zabbix
Weakness type
Related vulnerabilities
- CVE-2026-87011 — Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout
- CVE-2026-86432 — commonmark 2.0.0 before 2.8.4 Denial of Service via XML
- CVE-2026-82309 — Robots::Validate versions from 0.3.2 before 0.3.11 for Perl allow unbounded outbound DNS queries per validation via a forward-confirmation loop that does not bound the names it queries
- CVE-2026-84310 — pypdf: Possible long runtimes/large memory usage when retrieving outlines
- CVE-2026-54874 — Excessive Memory Use Buffering DTLS Records for a Future Epoch
- CVE-2026-23930 — Frontend DoS via the popup.testtriggerexpr action
- CVE-2026-72914 — Mastodon: Exhausting data by an unauthenticated request to the admin retention API
- CVE-2025-32394 — AutoGPT: There is a DoS vulnerability in AITextSummarizerBlock