CVE record · CVE-2026-11854

Cross-Site Scripting via Authentication Endpoint Error Message in Multiple WSO2 Products

CVSS 6.1 MediumEPSS 0.0021 · 11th percentile

Published by the CVE Program (CNA: WSO2) at 28 Oct 2026, 19:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
WSO2	WSO2 API Manager	unknown before 3.2.0 custom affected 3.2.0 to before 3.2.0.480 custom affected 3.2.1 to before 3.2.1.99 custom affected 4.1.0 to before 4.1.0.265 custom affected 4.2.0 to before 4.2.0.205 custom affected 4.3.0 to before 4.3.0.117 custom affected 4.4.0 to before 4.4.0.80 custom affected 4.5.0 to before 4.5.0.65 custom affected 4.6.0 to before 4.6.0.29 custom affected 4.7.0 to before 4.7.0.1 custom Other versions: unaffected
WSO2	WSO2 API Control Plane	unknown before 4.5.0 custom affected 4.5.0 to before 4.5.0.66 custom affected 4.6.0 to before 4.6.0.30 custom affected 4.7.0 to before 4.7.0.1 custom Other versions: unaffected
WSO2	WSO2 Identity Server	unknown before 5.10.0 custom affected 5.10.0 to before 5.10.0.399 custom affected 5.11.0 to before 5.11.0.446 custom affected 6.0.0 to before 6.0.0.272 custom affected 6.1.0 to before 6.1.0.274 custom affected 7.0.0 to before 7.0.0.155 custom affected 7.1.0 to before 7.1.0.65 custom affected 7.2.0 to before 7.2.0.26 custom Other versions: unaffected

Identifiers: CVE-2026-11854
CNA: WSO2
Weakness (CWE): CWE-79
Tags: WSO2 API Manager
WSO2 API Control Plane
WSO2 Identity Server
Cross-site scripting (XSS)
Published: 28 Oct 2026
Updated: 29 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.1	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	CNA (WSO2)

CISA KEV Not listed.
EPSS 0.0021, the 11th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 28 Oct 2026. New records show when each source confirmed them.

Sources

References from the CNA

security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4850/ vendor-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.