TIBCO API Exchange Processes OAuth Incorrectly

published 2019-08-08 7y ago modified 2026-06-17 4mo ago also EUVD-2019-2909

cvss: 6.4; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits: 0; none known

The authorization component of TIBCO Software Inc.'s TIBCO API Exchange Gateway, and TIBCO API Exchange Gateway Distribution for TIBCO Silver Fabric contains a vulnerability that theoretically processes OAuth authorization incorrectly, leading to potential escalation of privileges for the specific customer endpoint, when the implementation uses multiple scopes. This issue affects: TIBCO Software Inc.'s TIBCO API Exchange Gateway version 2.3.1 and prior versions, and TIBCO API Exchange Gateway Distribution for TIBCO Silver Fabric version 2.3.1 and prior versions.

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Exploit prediction

0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.4	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
NVD	3.1	9.9	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

TIBCO Software Inc. TIBCO API Exchange Gateway
TIBCO Software Inc. TIBCO API Exchange Gateway Distribution for TIBCO Silver Fabric

References

tibco.com /services/support/advisories
vendor-advisory
tibco.com /support/advisories/2019/08/tibco-security-advisory-august-7-2019-tibco-api-exchange
issue-tracking, vendor-advisory

Sources

CVE List CVE-2019-11208
NVD CVE-2019-11208

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