Spring Security Advisories

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Unbounded recursion over attacker-controlled PDF outline tree in Spring AI PDF Document Reader

HIGH | AUGUST 20, 2026 | CVE-2026-47851

Description

Analyzing a PDF with a deeply nested or cyclic table of contents can cause a StackOverflowError in the ingestion thread.

Affected Spring Products and Versions

Spring AI:

  • 2.0.0 - 2.0.0
  • 1.1.0 - 1.1.8
  • 1.0.0 - 1.0.9

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.
Fix versionAvailability
2.0.0.1Enterprise Support Only
1.1.9Enterprise Support Only
1.0.10Enterprise Support Only

No further mitigation steps are necessary.

References

History

  • 2026-08-20: Initial vulnerability report published.

Reporting a vulnerability

To report a security vulnerability for a project within the Spring portfolio, see the Security Policy

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