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CVE-2013-4547

7.5
CVSS v2.0 Base Score
90.92%
HIGH RiskEPSS (100th percentile)

nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 allows remote attackers to bypass intended restrictions via an unescaped space character in a URI.

Published: 11/23/2013
Modified: 4/29/2026
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Vulnerability Summary

CVSS v2 Score

7.5

AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Score (Exploitation Probability)

90.92%HIGH Exploitation Risk
100th percentile

This vulnerability has a 90.92% probability of being exploited in the next 30 days, ranking higher than 100% of all scored CVEs.

CWE Classification

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Same Weakness Type(CWE-116)

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