UAA clients.write vulnerability

published 2019-08-05 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-2959

cvss: 7.3; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

Cloud Foundry UAA versions prior to v73.4.0 contain a vulnerability where a malicious client possessing the 'clients.write' authority or scope can bypass the restrictions imposed on clients created via 'clients.write' and create clients with arbitrary scopes that the creator does not possess.

Patch / fix

fixed in 3

pivotal_software application_service 2.3.15, 2.4.11, 2.5.7, 2.6.2
pivotal_software cloud_foundry_uaa 73.4.0
pivotal_software operations_manager 2.3.22, 2.4.16, 2.5.10, 2.6.4

Exploit prediction

1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	7.3	CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected products

Cloud Foundry UAA Release (OSS)

Classification

Weakness

CWE-269 Improper Privilege Management
CWE-732 Incorrect Permission Assignment for Critical Resource

References

cloudfoundry.org /blog/cve-2019-11270
vendor-advisory
pivotal.io /security/cve-2019-11270
vendor-advisory

Sources

CVE List CVE-2019-11270
NVD CVE-2019-11270

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Summary