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CVE-2026-47851— Unbounded recursion over attacker-controlled PDF outline tree in Spring AI PDF Document Reader

Quick assessment

Affected
Spring Spring AI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

对包含深层嵌套或循环结构的目录的 PDF 文件进行分析时，可能导致摄入线程中发生 StackOverflowError（栈溢出错误）。 受影响版本： Spring AI 2.0.0 Spring AI 1.1.0 - 1.1.8 Spring AI 1.0.0 - 1.0.9

CVSS 7.5 · High
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I. Basic Information for CVE-2026-47851

Vulnerability Information
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Vulnerability Title
Unbounded recursion over attacker-controlled PDF outline tree in Spring AI PDF Document Reader
Source: CVE Program / CVE List V5
Vulnerability Description
Analyzing a PDF with a deeply nested or cyclic table of contents can cause a StackOverflowError in the ingestion thread. Spring AI 2.0.0 Spring AI 1.1.0 - 1.1.8 Spring AI 1.0.0 - 1.0.9
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Spring Spring AI 2.0.0 -

II. Public POCs for CVE-2026-47851

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III. Intelligence Information for CVE-2026-47851

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Vendor Pages for CVE-2026-47851 (1)

Same Patch Batch · Spring · 2026-08-26 · 20 CVEs total

CVE-2026-47852 7.5 HIGH Predictable cache directory location allows local ONNX model substitution in Spring AI
CVE-2026-47841 7.4 HIGH WebAuthn User Verification Bypass via Session Serialization
CVE-2026-47836 7.2 HIGH Spring Cloud Config Server Susceptible To TOCTOU Attack When Using SVN
CVE-2026-47837 6.8 MEDIUM Spring Cloud Config Server Monitor Endpoint Does Not Validate Webhook Requests
CVE-2026-47860 6.5 MEDIUM Unbounded decompression of attacker-supplied compressed message bodies
CVE-2026-47842 6.5 MEDIUM Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Co
CVE-2026-47856 6.3 MEDIUM JsonToObjectTransformer resolves the json__TypeId__ message header to an arbitrary class w
CVE-2026-47861 6.3 MEDIUM UDP adapter sends ack to attacker-supplied host:port parsed from packet body, even when ac
CVE-2026-47848 6.1 MEDIUM Reactor Netty WebSocket Client Leaks Credentials On Redirect
CVE-2026-47863 5.9 MEDIUM Reactor Core bufferTimeout fair-backpressure pipeline permanently hangs when upstream deli
CVE-2026-47857 5.9 MEDIUM Reactor Core windowTimeout fair-backpressure stream hang due to 20-bit index wrap-around
CVE-2026-47862 5.4 MEDIUM ZipTransformer uses file_name header to build workDirectory path without sanitization
CVE-2026-47859 5.4 MEDIUM Unbounded memory allocation in RFC6587SyslogDeserializer (octet-counted framing) — remote
CVE-2026-47874 5.3 MEDIUM Reactor Netty HTTP Server Denial of Service With Pipelined Requests
CVE-2026-47845 5.3 MEDIUM Reactor Netty HTTP Server may incorrectly evaluate proxy addresses
CVE-2026-47844 5.3 MEDIUM Reactor Netty HTTP Server Leaks Exception Details
CVE-2026-47834 4.8 MEDIUM Spring Data JPA Sort expression validation bypass
CVE-2026-47850 4.3 MEDIUM Spring Data REST allows mutation of the version property of immutable aggregates via PUT
CVE-2026-47843 3.7 LOW Reactor Netty may incorrectly route traffic due to DNS resolver reuse

IV. Related Vulnerabilities

Same product: Spring AI
Same vendor: Spring

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