Access and integrity issue within Eclipse Jetty

published 2018-06-22 8 y ago modified 2026-06-17 4 mo ago also GHSA-mwcx-532g-8pq3 , EUVD-2018-0645

cvss: 8.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.6%; EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits: 0; none known

In Eclipse Jetty versions 9.4.0 through 9.4.8, when using the optional Jetty provided FileSessionDataStore for persistent storage of HttpSession details, it is possible for a malicious user to access/hijack other HttpSessions and even delete unmatched HttpSessions present in the FileSystem's storage for the FileSessionDataStore.

Patch / fix

fixed in 2

maven org.eclipse.jetty:jetty-server 9.4.11.v20180605
The Eclipse Foundation Eclipse Jetty 9.4.9

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-12538 updated 2026-11-05 cvss 5.6

jetty: HttpSessions access/hijack in the FileSystem's storage for the FileSessionDataStore.

Red Hat Enterprise Linux 6 jetty-eclipse Red Hat Enterprise Linux 7 jetty-io, jetty-ant, jetty-jmx, jetty-jsp, jetty-xml, jetty-http, +30 more Red Hat Fuse 7 jetty Red Hat JBoss Fuse 6 jetty Red Hat Satellite 5 jetty-project Red Hat Software Collections rh-java-common-jetty-io, rh-java-common-jetty-ant, rh-java-common-jetty-jmx, rh-java-common-jetty-jsp, rh-java-common-jetty-xml, rh-java-common-jetty-http, +30 more
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.56% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	org.eclipse.jetty:jetty-server	>=9.4.0, <9.4.11.v20180605	9.4.11.v20180605

Affected products

The Eclipse Foundation Eclipse Jetty

Classification

Weakness

CWE-6 J2EE Misconfiguration: Insufficient Session-ID Length
CWE-384 Session Fixation

References

bugs.eclipse.org /bugs/show_bug.cgi?id=536018
web, issue-tracking, vendor-advisory
securitytracker.com /id/1041194
vdb-entry, web, third-party-advisory
oracle.com /technetwork/security-advisory/cpuoct2019-5072832.html
web
lists.apache.org /thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
mailing-list
oracle.com /security-alerts/cpuoct2020.html
web
security.netapp.com /advisory/ntap-20181014-0001/
third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2018-12538
advisory
github.com /advisories/GHSA-mwcx-532g-8pq3
advisory
lists.apache.org /thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E
web
security.netapp.com /advisory/ntap-20181014-0001
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary