CVE-2026-47851: CWE-674 Uncontrolled Recursion in Spring Spring AI
Description
CVE-2026-47851 is a high-severity vulnerability in Spring AI where analyzing a PDF with a deeply nested or cyclic table of contents can cause a StackOverflowError in the ingestion thread. This uncontrolled recursion issue affects multiple versions of Spring AI, including 1.0.0 through 1.0.9, 1.1.0 through 1.1.8, and version 2.0.0. The vulnerability does not impact confidentiality or integrity but causes a denial of service due to application crash.
CVSS v3.1
Score 7.5high
Affected software
Spring
Spring AI
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-674 (Uncontrolled Recursion), occurs in Spring AI when processing PDFs that contain deeply nested or cyclic table of contents structures. The recursive processing leads to a StackOverflowError in the ingestion thread, resulting in a denial of service condition. Affected versions include Spring AI 1.0.0 to 1.0.9, 1.1.0 to 1.1.8, and 2.0.0. The CVSS 3.1 base score is 7.5, reflecting network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality or integrity impact, and high availability impact.
Potential Impact
The primary impact is denial of service caused by a StackOverflowError in the ingestion thread when processing maliciously crafted PDFs with deeply nested or cyclic table of contents. There is no impact on confidentiality or integrity. This can disrupt the availability of the Spring AI service during ingestion operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Until a patch is available, avoid processing PDFs with deeply nested or cyclic table of contents to mitigate risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- vmware
- Date Reserved
- 2026-05-20T10:00:53.147Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8f86faacd9273b49947068
Added to database: 08/27/2026, 00:38:18 UTC
Last enriched: 09/09/2026, 14:52:26 UTC
Last updated: 10/10/2026, 18:48:19 UTC
Views: 97
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