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CVE-2018-11788

34
FAUCET Score

CVE-2018-11788 describes an XML External Entity (XXE) vulnerability in Apache Karaf versions prior to 4.1.7 and 4.2.2, specifically within its features deployer when parsing features XML files. This critical vulnerability (CVSS 9.8) allows an unauthenticated attacker to inject external XML entities, potentially leading to information disclosure, denial of service, or remote code execution due to the lack of mitigation in the XMLInputFactory class. Despite its high severity and EPSS score, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.1.7CPE matchmatch criteria
cpe:2.3:a:apache:karaf:*:*:*:*:*:*:*:*
>= 4.2.0, <= 4.2.1CPE matchmatch criteria
cpe:2.3:a:apache:karaf:*:*:*:*:*:*:*:*
4.2.0CPE matchmatch criteria
cpe:2.3:a:apache:karaf:4.2.0:milestone1:*:*:*:*:*:*
4.2.0CPE matchmatch criteria
cpe:2.3:a:apache:karaf:4.2.0:milestone2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
7.48%
Probability of exploitation in next 30 days
EPSS Percentile
93.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0748 is in the 89th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

mavenpatch availablevia ghsa
Product: org.apache.karaf.specs:org.apache.karaf.specs.java.xmlFixed in: 4.2.2
mavenpatch availablevia ghsa
Product: org.apache.karaf.specs:org.apache.karaf.specs.java.xmlFixed in: 4.1.7
redhatno patchvia redhat_api
Product: Red Hat Fuse 7Fixed in: karaf
redhatend of lifevia redhat_api
Product: Red Hat JBoss A-MQ 6Fixed in: karaf
redhatend of lifevia redhat_api
Product: Red Hat JBoss Fuse 6Fixed in: karaf
redhatend of lifevia redhat_api
Product: Red Hat JBoss Fuse Service Works 6Fixed in: karaf
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 13 (Queens)Fixed in: opendaylight

Vendor Advisories (2)

mavenGHSA-92wj-x78c-m4fxcritical

XML External Entity Reference in Apache Karaf

Jan 7, 2019
redhatCVE-2018-11788Important

karaf: XML external entity processing

Jan 6, 2019

References

karaf.apache.org / security/cve-2018-11788.txt
Vendor Advisory
securityfocus.com / bid/106479
Third Party AdvisoryVDB Entry