Information leak in QUIC in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to leak sensitive information via a crafted HTML page. (CVE-2026-78893)
Description
A medium severity information leak vulnerability exists in the QUIC implementation of Google Chrome versions prior to 152.0.7977.65. This flaw allows a remote attacker to leak sensitive information by crafting a malicious HTML page. The vulnerability does not impact integrity or availability but can lead to confidentiality breaches.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-78893 is an information leak vulnerability in the QUIC protocol implementation within Google Chrome before version 152.0.7977.65. An attacker can exploit this flaw remotely by delivering a specially crafted HTML page that causes the browser to leak sensitive information. The vulnerability has a CVSS 3.1 base score of 6.5, reflecting a medium severity with network attack vector, low attack complexity, no privileges required, user interaction needed, and high confidentiality impact without affecting integrity or availability.
Potential Impact
Successful exploitation can lead to unauthorized disclosure of sensitive information from the affected browser, potentially compromising user privacy or security. There is no indication of impact on data integrity or system availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available in Google Chrome version 152.0.7977.65 and later. Users and administrators should update affected Chrome installations to this version or newer to remediate the vulnerability. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-mqfm-5rqm-9q4m
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-78893"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a90542dacd9273b496989fa
Added to database: 08/27/2026, 15:13:49 UTC
Last enriched: 09/10/2026, 05:08:47 UTC
Last updated: 10/11/2026, 18:48:22 UTC
Views: 86
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