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PatchSiren cyber security CVE debrief

CVE-2016-5226 Google CVE debrief

CVE-2016-5226 describes a Chrome/Blink issue where a javascript: URL dragged and dropped into the browser’s URL bar could execute in the context of the current tab. The practical risk is a socially engineered XSS event against the person using the browser, not a remote wormable flaw. NVD rates it medium severity, with user interaction required and low impact to confidentiality and integrity.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 6.1
CISA KEV
Not listed in stored evidence
Original CVE published
2017-01-19
Original CVE updated
2026-05-13
Advisory published
2017-01-19
Advisory updated
2026-05-13

Who should care

Organizations that manage Google Chrome on desktop systems, especially endpoint teams and security awareness programs, should care. Any environment where users may be tricked into interacting with browser chrome or address-bar content is relevant.

Technical summary

Per the CVE description, Blink in Google Chrome executed javascript: URLs entered in the URL bar when a user dragged and dropped such a URL into it, and the code ran in the context of the current tab. NVD classifies the weakness as CWE-79 and gives CVSS 3.0 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. The source corpus also notes a fixed Chrome release referenced by Google and downstream advisories.

Defensive priority

Medium. The issue requires user interaction and is best treated as a prompt browser patching item rather than an emergency remote-execution incident, but it still enables script execution in a trusted browser context and should be remediated quickly in managed fleets.

Recommended defensive actions

  • Update Google Chrome to a release at or beyond the fixed version referenced by the vendor advisory.
  • Verify that Chrome auto-update is functioning across managed endpoints and that outdated versions are being detected.
  • Use endpoint and browser inventory to confirm no systems remain on vulnerable Chrome builds.
  • Reinforce user guidance not to drag unknown content into the address bar or otherwise interact with unexpected javascript: URLs.
  • Track downstream browser and OS advisories that reference the same Chrome fix path for fleet coverage.

Evidence notes

This debrief is based on the NVD CVE record and the vendor-linked references in the source corpus. The CVE description states the issue is in Blink/Chrome and involves execution of javascript: URLs dropped into the URL bar. NVD marks the record as Modified and lists CWE-79. A source-version note exists: the CVE description references Chrome prior to 55.0.2883.75, while the NVD CPE range in the provided record ends at 54.0.2840.99; both indicate older Chrome builds were affected, but the exact scope should be checked against the vendor advisory.

Sources and references

Verified primary and authoritative sources

  • CVE-2016-5226 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2016-5226

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2016-5226 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2016-5226

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.