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Fencer Vulns
low 3.5

CVE-2019-20443 json

An issue was discovered in WSO2 API Manager 2.6.0, WSO2 Enterprise Integrator 6.5.0, WSO2 IS as Key Manager 5.7.0, and WSO2 Identity Server…

published 2020-01-27 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10991

cvss
3.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

An issue was discovered in WSO2 API Manager 2.6.0, WSO2 Enterprise Integrator 6.5.0, WSO2 IS as Key Manager 5.7.0, and WSO2 Identity Server 5.8.0. A potential stored Cross-Site Scripting (XSS) vulnerability in mediaType has been identified in the registry UI.

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/cybersecurityworks/Disclosed/issues/26 referenced PoC, tagged "exploit" by a source, unverified
  • cybersecurityworks.com https://cybersecurityworks.com/zerodays/cve-2019-20443-wso2.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 3.5 CVSS:3.0/AC:L/AV:N/A:N/C:L/I:L/PR:H/S:U/UI:R
NVD 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CNA 3.0 3.5 CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.