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Vulnerability details: VCID-w2n7-49dv-6ba3
Vulnerability ID VCID-w2n7-49dv-6ba3
Aliases CVE-2015-7188
Summary Security researcher Michał Bentkowski reported that adding white-space characters to hostnames that are IP addresses can bypass same-origin policy. This flaw was caused by trailing whitespaces being evaluated differently when parsing IP addresses instead of alphanumeric hostnames. This could lead to a cross-site script (XSS) attack. In general this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled, but is potentially a risk in browser or browser-like contexts.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
No exploits are available.
Exploit Prediction Scoring System (EPSS)
Percentile 0.78321
EPSS Score 0.0123
Published At Aug. 6, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:10:53.673414+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2015/mfsa2015-122.md 37.0.0