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CVE-2019-20436

20
FAUCET Score

CVE-2019-20436 is a medium-severity cross-site scripting (XSS) vulnerability affecting WSO2 API Manager 2.6.0, WSO2 IS as Key Manager 5.7.0, and WSO2 Identity Server 5.8.0. An authenticated attacker with management console privileges can inject an XSS payload into a claim dialect URI, which executes when a user configures a service provider with that dialect. The CVSS score is 6.1 (MEDIUM), indicating a network-based attack with low complexity requiring user interaction, potentially leading to limited confidentiality and integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.0CPE matchmatch criteria
cpe:2.3:a:wso2:api_manager:2.6.0:*:*:*:*:*:*:*
5.7.0CPE matchmatch criteria
cpe:2.3:a:wso2:identity_server:5.7.0:*:*:*:*:*:*:*
5.8.0CPE matchmatch criteria
cpe:2.3:a:wso2:identity_server:5.8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.37%
Probability of exploitation in next 30 days
EPSS Percentile
69.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0137 is in the 81st percentile among its peer group of 26,236 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

Remediation records are not available for this CVE.

References

cybersecurityworks.com / zerodays/cve-2019-20436-wso2.html
ExploitThird Party Advisory
docs.wso2.com / display/Security/Security+Advisory+WSO2-2019-0634
Vendor Advisory
github.com / cybersecurityworks/Disclosed/issues/19
ExploitThird Party Advisory