EUVD-2026-65900
GHSA-j8hx-8m98-mcjg
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Network-reachable HTTP/2 flaw with no authentication needed, but high complexity from required traffic crafting; confidentiality-only impact, no integrity or availability loss.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Missing authorization in HTTP2 in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to leak sensitive information via crafted network traffic. (Chromium security severity: Medium)
AnalysisAI
Missing authorization in Google Chrome's HTTP/2 implementation prior to version 152.0.7977.65 exposes sensitive browser information to remote attackers via crafted network traffic. The CVSS vector (AV:N/AC:H/PR:N/UI:N) indicates no authentication is required but high attack complexity, consistent with a need for specific network positioning or traffic crafting. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network-adjacent or man-in-the-middle positioning to deliver crafted HTTP/2 traffic to a vulnerable Chrome client (AC:H from CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.9 score with AV:N/AC:H reflects a genuine but constrained threat: network-reachable with no authentication required, but high attack complexity limits opportunistic mass exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with network positioning - for example, operating as a man-in-the-middle on a shared or controlled network segment - sends specially crafted HTTP/2 frames to a Chrome browser running a vulnerable version. The missing authorization check causes Chrome to disclose sensitive information (such as cross-origin data or session-related content) to the attacker-controlled endpoint without proper validation. … |
| Remediation | Vendor-released patch: Chrome 152.0.7977.65. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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