Is CVE-2011-3368 in the CISA KEV catalog?

No. CVE-2011-3368 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-3368?

CVE-2011-3368 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2011-3368?

CVE-2011-3368 has an EPSS score of 90.73% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-3368

MEDIUMEPSS 100th pctl

5.0

CVSS v2

NVD

Description

The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21 does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers via a malformed URI containing an initial @ (at sign) character.

CWE-20Improper Input Validation

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

90.73%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.