Improper input validation in Wso2 API Control Plane
CVE-2026-0637
When a proxy server is configured with `customUrl.enabled`, the component accepts user-supplied input within forwarded HTTP headers without enforcing expected validation constraints. A malicious actor can manipulate these headers to influence the URL construction process, leading to an open redirect vulnerability. Additionally, unsanitized header values are written to application logs. An attacker can exploit this to force redirection to arbitrary malicious domains, potentially enabling phishing attacks. Furthermore, they can inject forged entries into application logs, impacting the reliability of security logs and potentially hindering incident investigation.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (5.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 5.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Wso2 API Control Plane
- Wso2 API Manager
- Wso2 Identity Server
- Wso2 Identity Server As Key Manager
- Wso2 Open Banking Am
- Wso2 Open Banking Iam
- Wso2 Traffic Manager
- Wso2 Universal Gateway
- Wso2 API Control Plane — versions 0, 4.5.0, 4.6.0
- Wso2 API Manager — versions 0, 3.1.0, 3.2.0
Weakness classification (CWE)
References
- ed10eef1-636d-4fbe-9993-6890dfa878f8 (vendor-advisory, Vendor Advisory)
- ed10eef1-636d-4fbe-9993-6890dfa878f8 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-0637?
- CVE-2026-0637 is a medium-severity vulnerability in Wso2 API Control Plane, classified under Improper Input Validation. CVSS score: 5.4/10. Published 2026-08-06.
- How severe is CVE-2026-0637?
- Medium severity. CVSS v3 base score is 5.4 out of 10.