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Site isolation bypass in Google Chrome Navigation

IdentifiersCVE-2026-13024CWE-20

CVE-2026-13024 is a high-severity insufficient validation of untrusted input vulnerability in the Navigation component of Google Chrome. According to the provided advisory text, Chrome versions prior to 149.0.7827.197 fail to adequately validate attacker-controlled input during navigation handling. A remote attacker who has already compromised the renderer process can use a crafted HTML page to bypass Chrome site isolation protections. The issue is described by Chromium as an insufficient input validation flaw in Navigation and affects Chrome prior to 149.0.7827.197.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an attacker who already has renderer-process compromise to bypass Chrome's site isolation security boundary. This can weaken origin and process separation guarantees and may enable access to data or contexts that should remain isolated across sites. The provided Debian advisory also notes that Chromium vulnerability batches of this release could lead to information disclosure, denial of service, or arbitrary code execution in some cases, but for CVE-2026-13024 specifically the stated impact is security restriction bypass via site isolation bypass.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure by limiting use of untrusted web content, enforcing rapid browser restarts to apply available updates, and prioritizing patch deployment on systems where renderer compromise would present elevated risk. Because exploitation requires prior renderer compromise, hardening measures that reduce the likelihood of renderer exploitation by malicious pages may also reduce practical risk. Specific vendor-provided mitigations beyond patching were not provided in the content.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome to version 149.0.7827.197 or later. For Chromium on Debian stable (trixie), upgrade to 149.0.7827.196-1~deb13u1 or a later patched package provided by Debian. Downstream Chromium-based browsers should also be updated once vendor patches are available.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
DebianChromiumapplication
GoogleChromeapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

6 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity1

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-13024
NVD
nvd.nist.gov/vuln/detail/CVE-2026-13024
MITRE CWE · CWE-20
cwe.mitre.org