EUVD-2026-70227
GHSA-q5rj-fmg6-p6r6
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable with no auth, but UI:R maps to CVSS 4.0 UI:P; impact is availability-only and low, matching resource-exhaustion DoS with no data exposure.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Uncontrolled resource consumption in ntegrals openbrowser's Browser Agent Message Construction component allows remote attackers to degrade availability by crafting malicious messages that exhaust agent resources. The affected code resides in packages/core/src/agent/agent.ts, and the flaw requires passive user interaction (UI:P) per the CVSS 4.0 vector, limiting full automation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network access to a running openbrowser instance and passive user interaction (UI:P per CVSS 4.0), meaning some action by a user or operator must occur to process the crafted message - fully automated zero-interaction exploitation is not confirmed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 5.3 (Medium) reflects a bounded impact: availability impact is Low on the vulnerable system only (VA:L), with no confidentiality or integrity consequence and no subsequent-system impact (SC/SI/SA all N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis - the vendor did not respond to disclosure. … Detailed patch versions, workarounds, and compensating controls in full report. |
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More in Openbrowser
View allSame weakness CWE-400 – Uncontrolled Resource Consumption
View allSame technique Denial Of Service
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External POC / Exploit Code
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