CVE-2019-20435Public exploitNetwork attack vector

Reflected XSS via unneutralized docName parameter

Published Jan 27, 2020 · Updated Aug 5, 2024

Reflected XSS in WSO2 API Manager 2.6.0 allows remote authenticated users to execute scripts through a crafted documentation URL. The inline API documentation editor reflects the GET docName value into its response without neutralizing executable HTML and JavaScript. Exploitation requires API Publisher privileges and a victim who opens the crafted URL; script execution can redirect the browser, alter the page, or read browser-accessible data, while protected cookies prevent session hijacking.

CVSS severity3.5
Low
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in WSO2 API Manager 2.6.0 allows remote authenticated users to execute scripts through a crafted documentation URL. The inline API documentation editor reflects the GET docName value into its response without neutralizing executable HTML and JavaScript. Exploitation requires API Publisher privileges and a victim who opens the crafted URL; script execution can redirect the browser, alter the page, or read browser-accessible data, while protected cookies prevent session hijacking.

The record

CVE
CVE-2019-20435
Published
Jan 27, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 27, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
3.5WSO2CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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