CVE-2020-17453API Manager XSS
WSO2 Management Console through 5.10 allows XSS via the carbon/admin/login.jsp msgId parameter.
Published Apr 5, 2021 · Updated Oct 20, 2026
Key Facts
Patch immediately- CVE-2020-17453 is a medium-severity vulnerability (CVSS 6.1 v3.1) affecting API Manager (Wso2), API Manager Analytics (Wso2), API Microgateway (Wso2) and 5 more products.
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Apr 5, 2021. No public exploit code is known.
- EPSS estimates a 26% probability of exploitation in the next 30 days.
- Fixed versions are available, including API Manager <=3.2.0, Enterprise Integrator <=6.6.0, Identity Server <=5.10.0.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS (30-day exploit likelihood)
26%
Higher than 97.9% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
44/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Apr 5, 2021
0 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
11
Reports of active use
Description
WSO2 Management Console through 5.10 allows XSS via the carbon/admin/login.jsp msgId parameter.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Apr 5, 2021 | n/a | Not reported |
| Industry KEV feed | Apr 5, 2021 | n/a | Not reported |
Affected Products
17 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| API ManagerWso2 | See advisory | 3.2.0 |
| API Manager AnalyticsWso2 | 2.2.0, 2.5.0, 2.6.0 | n/a |
| API MicrogatewayWso2 | 2.2.0 | n/a |
| Enterprise IntegratorWso2 | See advisory | 6.6.0 |
| Identity ServerWso2 | See advisory | 5.10.0 |
Patched Releases
API Manager
<=3.2.0
Enterprise Integrator
<=6.6.0
Identity Server
<=5.10.0
Timeline
Publicly disclosed
Apr 5, 2021
Added to CIRCL KEV
Apr 5, 2021
Added to Industry KEV feed
Apr 5, 2021
Last updated
Oct 20, 2026
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
WSO2 Management Console through 5.10 allows XSS via the carbon/admin/login.jsp msgId parameter.
Affected: API Manager (Wso2); API Manager Analytics (Wso2) versions 2.2.0, 2.5.0, 2.6.0; API Microgateway (Wso2) versions 2.2.0, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Apr 5, 2021.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including API Manager <=3.2.0, Enterprise Integrator <=6.6.0, Identity Server <=5.10.0.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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