Medium severity · published Oct 29, 2020
CVE-2020-27885
Cross-Site Scripting (XSS) vulnerability on WSO2 API Manager 3.1.0
6.1
CVSS
1.1%
EPSS
No
On KEV
Description
Cross-Site Scripting (XSS) vulnerability on WSO2 API Manager 3.1.0. By exploiting a Cross-site scripting vulnerability the attacker can hijack a logged-in user’s session by stealing cookies which means that a malicious hacker can change the logged-in user’s password and invalidate the session of the victim while the hacker maintains access.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AM
Api Manager · Wso2
3.1.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27885
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27885
Vendor Advisory
https://docs.wso2.com/display/Security/2020+Advisories
Exploit
https://www.rodrigofavarini.com.br/cybersecurity/multiple-xss-on-api-manager-3-1-0/
More from Api Manager
10.0
CVE-2026-5430
Authentication Bypass via JWT Algorithm Mismatch in Multiple WSO2 Products Allows Account Takeover
9.8
CVE-2022-29464
WSO2 Multiple Products Unrestrictive Upload of File Vulnerability
10.0
CVE-2026-2053
Unauthenticated Server-Side Request Forgery via WS-Addressing in WSO2 API Manager
9.8
CVE-2026-1728
Privilege Escalation via System REST APIs in Multiple WSO2 Products Permits Admin Account Takeover
9.8
CVE-2025-9312
Improper Certificate-Based Authentication Enforcement in Multiple WSO2 Products