Google Chrome for Android: Confused deputy in WebAPKs allows origin policy bypass
Summary
A confused deputy flaw in WebAPKs, the Android app packages that Chrome generates for installed web apps, allows a remote attacker to bypass the web origin policy. The attack requires a user to open a crafted HTML page, and the attacker relies on social engineering to get the user there. CISA SSVC rates the technical impact as total, but exploitation is not automatable and no exploitation has been observed.
Affected
- Google Chrome for Android prior to 155.0.8059.39
Fixed in
- Google Chrome for Android 155.0.8059.39 or later
Workaround
Unknown.
Exploitation
- No known exploitation.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- Chromium security severity: Low.
Our recommendation
- Update Chrome for Android to 155.0.8059.39 or later on all mobile devices.
- Note that the rollout is staged and the update may not yet be available to every user via Google Play.
- Check the Chrome version on managed devices and enforce the update via mobile device management.
- Train users not to open unknown links and pages, especially from unsolicited messages.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Chrome Releases: Stable Channel Update for Desktop chromereleases.googleblog.com
- Chromium issue 540049672 issues.chromium.org
- CVE-2026-106221 mirror (threatint) cve.threatint.com
- Malwarebytes: Update Chrome and ChromeOS to fix critical security issues www.malwarebytes.com
- gHacks: Google releases Chrome 155 with 247 security fixes www.ghacks.net
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 14:12.
Original description (NVD)
Confused deputy in WebAPKs in Google Chrome on on Android prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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