Resource exhaustion in Ntegrals Openbrowser
CVE-2026-84833
A vulnerability was found in ntegrals openbrowser up to 067fc45d649baa961750da8e2f4a75d87c5c75c8. Affected by this vulnerability is an unknown functionality of the file packages/core/src/agent/agent.ts of the component Browser Agent Message Construction. Performing a manipulation results in resource consumption. It is possible to initiate the attack remotely. The exploit has been made public and could be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Ntegrals Openbrowser — versions 067fc45d649baa961750da8e2f4a75d87c5c75c8
Weakness classification (CWE)
References
- vuldb.com/vuln/398080 (vdb-entry)
- vuldb.com/vuln/398080/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-84833 (third-party-advisory)
- vuldb.com/submit/885464 (third-party-advisory)
- github.com/outlookgp/CVE/tree/main/OpenBrowser_Message_Budget_DoS_Report (exploit)
Frequently asked questions
- What is CVE-2026-84833?
- CVE-2026-84833 is a medium-severity vulnerability in Ntegrals Openbrowser, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2026-09-02.
- How severe is CVE-2026-84833?
- Medium severity. CVSS v3 base score is 4.3 out of 10.