Google Chrome: Use-after-free in GarbageCollection allows code execution
Summary
A use-after-free flaw in the GarbageCollection component of Google Chrome before 155.0.8059.39 allows a remote attacker to execute arbitrary code inside the sandbox. The attacker needs a victim to open a crafted HTML page, so user interaction is required. The NVD description limits the impact to code execution inside the sandbox, and a full compromise would need further steps. Chromium-based products such as Debian chromium are affected as well through their own packages.
Affected
- Google Chrome desktop builds before 155.0.8059.39
- Chromium-based packages that have not yet received the fix, e.g. Debian chromium (fixed in 155.0.8059.39-1~deb12u1)
Fixed in
- Google Chrome 155.0.8059.39 (Windows, Linux)
- Google Chrome 155.0.8059.40 (macOS)
- Debian chromium 155.0.8059.39-1~deb12u1
Workaround
Unknown. No workaround is documented; installing the update is the fix.
Exploitation
- CISA SSVC assessment: Exploitation none, Automatable no, Technical Impact total
- A secondary mirror of CISA data does not list the CVE as known exploited; the CISA KEV catalogue was not checked directly
- No public proof-of-concept found in the research
- EPSS 0.00303 (low predicted exploitation probability)
Our recommendation
- Update Google Chrome to 155.0.8059.39 or later (155.0.8059.40 on macOS) and restart the browser
- Check managed or frozen installations and update Chromium-based applications such as Microsoft Edge and Debian chromium packages
- Confirm the installed version at chrome://version, since Chrome updates roll out in phases
- Monitor for exploitation reports and limit browsing of untrusted sites on systems that are not yet patched
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 tracker 499571442 issues.chromium.org
- OSV: DEBIAN-CVE-2026-106291 osv.dev
- CISA ADP Vulnrichment mirror for CVE-2026-106291 hol.org
- Chrome 155 release coverage (gHacks) www.ghacks.net
- Chrome 155 stable update for Windows, Mac and Linux (BrowserHow) browserhow.com
- Chainguard/Vulners record CVE-2026-106291 vulners.com
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 31 Oct 2026, 22:00.
Original description (NVD)
Use after free in GarbageCollection in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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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