How severe is CVE-2026-2053?

CVE-2026-2053 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-2053 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2053?

CVE-2026-2053 affects Wso2 Api Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2053?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-2053 have an EU (EUVD) identifier?

Yes. CVE-2026-2053 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39638.

When was CVE-2026-2053 published?

CVE-2026-2053 was published on 2026-06-26 and last updated on 2026-06-27.

CVE-2026-2053

CVE-2026-2053 is a high-severity vulnerability in Wso2 Api Manager with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39638
Weakness: CWE-918
Affected product: Wso2 Api Manager
Published: 2026-06-26
Last modified: 2026-06-27

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.

Frequently asked questions

What is CVE-2026-2053?: 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.
How severe is CVE-2026-2053?: CVE-2026-2053 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-2053 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2053?: CVE-2026-2053 affects Wso2 Api Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2053?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-2053 have an EU (EUVD) identifier?: Yes. CVE-2026-2053 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39638.
When was CVE-2026-2053 published?: CVE-2026-2053 was published on 2026-06-26 and last updated on 2026-06-27.

References

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5072/

Affected products (1)

cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:*

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