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CVE-2017-8031

20
FAUCET Score

CVE-2017-8031 describes a denial-of-service vulnerability affecting Cloud Foundry cf-release (all versions prior to v279) and UAA (specific versions in the 30.x, 45.x, and 52.x series). An authenticated user could revoke client tokens for other users on the same client, specifically when opaque or check_token validated JWT tokens are in use. This medium-severity vulnerability has a CVSS score of 5.3, indicating a network attack vector with high attack complexity and a high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 278CPE matchmatch criteria
cpe:2.3:a:cloudfoundry:cf-release:*:*:*:*:*:*:*:*
>= 30, < 30.6CPE matchmatch criteria
cpe:2.3:a:cloudfoundry:uaa-release:*:*:*:*:*:*:*:*
>= 45, < 45.4CPE matchmatch criteria
cpe:2.3:a:cloudfoundry:uaa-release:*:*:*:*:*:*:*:*
52CPE matchmatch criteria
cpe:2.3:a:cloudfoundry:uaa-release:52:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.09%
Probability of exploitation in next 30 days
EPSS Percentile
61.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0109 is in the 58th percentile among its peer group of 1,425 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 (3)

mavenpatch availablevia ghsa
Product: org.cloudfoundry.identity:cloudfoundry-identity-serverFixed in: 4.7.1
mavenpatch availablevia ghsa
Product: org.cloudfoundry.identity:cloudfoundry-identity-serverFixed in: 4.5.3
mavenpatch availablevia ghsa
Product: org.cloudfoundry.identity:cloudfoundry-identity-serverFixed in: 3.20.1

Vendor Advisories (1)

mavenGHSA-j4p3-2m2h-cv5fmedium

Cloud Foundry UAA Denial of Service through client token revocation endpoint

May 13, 2022

References

cloudfoundry.org / cve-2017-8031
Issue TrackingThird Party Advisory
securityfocus.com / bid/101967
Third Party AdvisoryVDB Entry