CVE-2011-3956

NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 1%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The extension implementation in Google Chrome before 17.0.963.46 does not properly handle sandboxed origins, which might allow remote attackers to bypass the Same Origin Policy via a crafted extension.

CVSS v3
—
EG Score
0.0(none)
EPSS
48.5%
KEV
Not listed

Published

February 9, 2012

Last Modified

April 29, 2026

References (6)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 38× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:03 UTCEPSS rescore
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  1. 2026-06-30 23:19 UTCEPSS rescore
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  56. 2026-05-29 05:30 UTCEG score recompute
  57. 2026-05-29 05:30 UTCGHSA enrichment
  58. 2026-05-28 13:42 UTCEPSS rescore
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  74. 2026-05-18 21:29 UTCEPSS rescore
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Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2011-3956?
CVE-2011-3956 is a none vulnerability published on February 9, 2012. The extension implementation in Google Chrome before 17.0.963.46 does not properly handle sandboxed origins, which might allow remote attackers to bypass the Same Origin Policy via a crafted extension.
When was CVE-2011-3956 disclosed?
CVE-2011-3956 was first published in the National Vulnerability Database on February 9, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-3956 actively exploited?
CVE-2011-3956 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 48.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-3956?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-3956, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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