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CVE-2018-1323

47
FAUCET Score

CVE-2018-1323 describes a path normalization vulnerability in the Apache Tomcat JK ISAPI Connector, versions 1.2.0 to 1.2.42. This flaw allows attackers to bypass intended URL restrictions when Tomcat is exposed via IIS, potentially exposing application functionality not meant for public access. Rated with a CVSS score of 7.5 (High), this vulnerability has a network attack vector, low attack complexity, and could lead to high confidentiality impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.2.0, <= 1.2.42CPE matchmatch criteria
cpe:2.3:a:apache:tomcat_jk_connector:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
43.05%
Probability of exploitation in next 30 days
EPSS Percentile
98.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.4305 is in the 97th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Text-Only JBCS
View patch
redhatno patchvia redhat_api
Product: Red Hat JBoss Core ServicesFixed in: isapi_redirect
redhatno patchvia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6Fixed in: web
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2Fixed in: web

Vendor Advisories (1)

redhatCVE-2018-1323Important

isapi_redirect: Mishandled HTTP request paths in jk_isapi_plugin.c can lead to unintended exposure of application resources via the reverse proxy

Mar 13, 2018

References

access.redhat.com / errata/RHSA-2018:1843
Third Party Advisory
lists.apache.org / thread.html/277d42b48b6e9aef50949c0dcc79ce21693091d73da246b3c1981925%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/5b7a23e245c93235c503900da854a143596d901bf1a1f67e851a5de4%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/6e146bce83578bd870893250ba8354e28f9d8e86c674c30dbeee529f%40%3Cannounce.tomcat.apache.org%3E
lists.apache.org / thread.html/8d2a579bbd977c225c70cb23b0ec54865fb0dab5da3eff1e060c9935%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/r5c616dfc49156e4b06ffab842800c80f4425924d0f20c452c127a53c%40%3Cdev.tomcat.apache.org%3E
lists.apache.org / thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E
securityfocus.com / bid/103389
Third Party AdvisoryVDB Entry