CVE-2026-78936: Observable discrepancy in Google Chrome
Description
Observable discrepancy in CustomTabs in Google Chrome on on Android prior to 152.0.7977.65 allowed a local attacker to obtain cross-origin data via a co-installed app. (Chromium security severity: Medium)
CVSS v3.1
Score 2.9low
Affected software
Chrome
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Google Chrome on Android (before version 152.0.7977.65) concerns an observable discrepancy in the CustomTabs implementation. A local attacker with a co-installed app could exploit this discrepancy to access cross-origin data that should otherwise be inaccessible. The issue is classified with a low severity level and a CVSS 3.1 base score of 2.9, indicating limited impact and requiring high attack complexity with no privileges and no user interaction.
Potential Impact
The impact is limited to information disclosure of cross-origin data to a local attacker via a co-installed app. There is no indication of integrity or availability impact. The vulnerability requires local access and has high attack complexity, reducing the likelihood of exploitation.
Mitigation Recommendations
A fix is available in Google Chrome version 152.0.7977.65 and later. Users should update to this version or newer to remediate the vulnerability. Refer to the official Google Chrome stable channel update advisory for confirmation and update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-08-25T06:04:12.296Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html","vendor":"Google"}]
Threat ID: 6a8df9b8acd9273b49ac6da7
Added to database: 08/25/2026, 20:23:20 UTC
Last enriched: 09/17/2026, 22:52:40 UTC
Last updated: 10/09/2026, 06:48:19 UTC
Views: 81
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