A HIGH-severity vulnerability identified as CVE-2026-2053 has been published on June 26, 2026 with a CVSS base score of 8.3. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.
Vulnerability Details
CVE ID: CVE-2026-2053
Severity: HIGH
CVSS Score: 8.3
Published: June 26, 2026
Weakness (CWE): CWE-918
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Confidentiality Impact | Low |
| Integrity Impact | Low |
| Availability Impact | Low |
Technical Description
The WSO2 API Manager's message flow component, when processing WS-Addressing headers, does not sufficiently validate or restrict user-controlled input within these headers. This omission allows an attacker to manipulate WS-Addressing headers to specify arbitrary destinations for server-initiated requests. Successful exploitation allows an unauthenticated attacker to control the destination of server-initiated requests originating from the WSO2 API Manager. This direct control can enable unauthorized access to internal network resources or services that would typically be inaccessible from external networks.
Potential Impact
If exploited, this high-severity vulnerability could allow an attacker to cause significant damage to affected systems. Organizations running affected software should treat this as a priority remediation item.
Recommended Action
No official patch is available yet. Until one is released:
- Monitor the official NVD page and vendor channels for patch announcements.
- Restrict access to the affected system or service where possible.
- Apply network-level mitigations such as firewall rules or WAF policies.
- Enable logging and alerting for anomalous activity related to this vulnerability.
- Review your incident response plan in case of active exploitation.
References
Related Security Advisories
- [HIGH] CVE-2026-11395 — CVSS 7.2 (June 18, 2026) — HIGH / CVSS 7.2
- [HIGH] CVE-2026-6229 — CVSS 7.2 (May 2, 2026) — HIGH / CVSS 7.2
- [HIGH] CVE-2026-49486 — CVSS 7.5 (June 26, 2026) — HIGH / CVSS 7.5
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