CVE intelligence and bounded remediation

CVE-2021-32828 — The Nuxeo Platform is an open source content management platform for building business applications

Medium CVSS 6.1

The Nuxeo Platform is an open source content management platform for building business applications. In version 11.5.109, the `oauth2` REST API is vulnerable to Reflected Cross-Site Scripting (XSS). This XSS can be escalated to Remote Code Execution (RCE) by levering the automation API.

Severity
Medium
CVSS
6.1 (3.1)
Published
2023-01-05
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-502, CWE-79

Affected products

  • hyland / nuxeo

Matched remediation archetype

Unsafe deserialization and object reconstruction

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Check exposure

  • Inventory serialization formats accepted from requests, queues, caches, files, cookies, and cross-service messages.
  • Trace whether untrusted input can select classes, types, callbacks, constructors, or object hooks during decoding.
  • Identify signing, schema validation, trust-boundary, and compatibility settings for each decoder.

Remediate safely

  • Replace native object deserialization with a data-only format and explicit schema validation.
  • If replacement is not immediate, use a safe decoder with a minimal type allowlist and disable polymorphic or executable hooks.
  • Update the affected library and add inert tests for unknown types, extra fields, malformed nesting, and unsigned data.

Authoritative sources

Complete CVE record and remediation plan

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