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CVE-2017-5656

21
FAUCET Score

CVE-2017-5656 describes a flaw in Apache CXF's STSClient (versions before 3.1.11 and 3.0.13) where an attacker can manipulate token caching to retrieve identifiers for other users' cached delegation tokens. This vulnerability carries a CVSSv3 score of 7.5 (HIGH), indicating it can be exploited remotely with low attack complexity, potentially leading to high confidentiality impact. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, < 3.0.13CPE matchmatch criteria
cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*
>= 3.1.0, < 3.1.11CPE matchmatch criteria
cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*

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
6.83%
Probability of exploitation in next 30 days
EPSS Percentile
93.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0683 is in the 89th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 (6)

mavenpatch availablevia ghsa
Product: org.apache.cxf:cxf-coreFixed in: 3.1.11
mavenpatch availablevia ghsa
Product: org.apache.cxf:cxf-coreFixed in: 3.0.13
redhatpatch availablevia redhat_api
Product: Red Hat JBoss A-MQ 6.3Fixed in: cxf
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Fuse 6.3Fixed in: cxf
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Openshift Application Runtimes
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Enterprise 2Fixed in: cxf

Vendor Advisories (2)

mavenGHSA-v936-x3j5-c76jhigh

Session Fixation in Apache CXF

May 13, 2022
redhatCVE-2017-5656Moderate

cxf: CXF's STSClient uses a flawed way of caching tokens that are associated with delegation tokens

Apr 5, 2017

References

cxf.apache.org / security-advisories.data/CVE-2017-5656.txt.asc
PatchVendor Advisory
access.redhat.com / errata/RHSA-2017:1832
Issue Tracking
access.redhat.com / errata/RHSA-2018:1694
Issue Tracking
lists.apache.org / thread.html/r36e44ffc1a9b365327df62cdfaabe85b9a5637de102cea07d79b2dbf%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rc774278135816e7afc943dc9fc78eb0764f2c84a2b96470a0187315c%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rd49aabd984ed540c8ff7916d4d79405f3fa311d2fdbcf9ed307839a6%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rff42cfa5e7d75b7c1af0e37589140a8f1999e578a75738740b244bd4%40%3Ccommits.cxf.apache.org%3E
securityfocus.com / bid/97971
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038282
Third Party AdvisoryVDB Entry