Google Chrome: Use after free in Parser allows sandboxed code execution
Summary
Google Chrome before 155.0.8059.39 contains a use-after-free flaw in its HTML parser (CWE-416). A remote attacker can execute arbitrary code inside the browser sandbox by tricking a user into opening a crafted HTML page. The CNA rates the issue at CVSS 8.8 (High). Chromium Security rates it as High severity.
Affected
- Google Chrome prior to 155.0.8059.39
- Per the third-party advisory summary, Windows and Mac builds prior to 155.0.8059.39/.40 and Linux builds prior to 155.0.8059.39
- Chromium-based browsers that ingest the affected Chromium code (for example Microsoft Edge), until they are updated
Fixed in
- Google Chrome 155.0.8059.39 or later (Windows/Mac 155.0.8059.39/.40 according to secondary sources; verify against the Google advisory)
- Later Chrome 155 stable updates include this fix
- Debian chromium 155.0.8059.39-1~deb12u1 and openSUSE Tumbleweed chromium 155.0.8059.39-1.1 according to distribution data
Workaround
Unknown. No workaround is documented in the sources. Updating the browser is the fix.
Exploitation
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total
- CISA ADP data does not mark the CVE as known exploited
- No public proof of concept or exploitation report was found in the sources
Our recommendation
- Update Google Chrome to the latest stable 155 release on all endpoints and verify the version
- Check that other Chromium-based browsers (for example Microsoft Edge) and Linux chromium packages are updated
- Enforce updates through managed deployment, because staged rollouts can delay some machines
- Prioritise browsers that are used for general web browsing
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 issues.chromium.org
- Debian OSV entry osv.dev
- Microsoft MSRC entry (via Vulners) vulners.com
- SUSE CVE entry (via Vulners) vulners.com
- CISA ADP Vulnrichment mirror hol.org
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, 21:44.
Original description (NVD)
Use after free in Parser 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: High)
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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