CVE-2026-40980 — In Spring AI, a malicious PDF file can be crafted that

title: Spring AI PDF Memory Exhaustion - CVE-2026-40980
id: scw-2026-04-28-ai-1
status: experimental
level: high
description: |
  Detects the creation of a PDF file, specifically one named 'malicious.pdf' (a placeholder for a crafted malicious file), which is known to trigger a memory exhaustion vulnerability in Spring AI versions 1.0.0-1.0.5 and 1.1.0-1.1.4 when processed by ForkPDFLayoutTextStripper. This rule aims to catch the initial delivery or creation of the malicious artifact.
author: SCW Feed Engine (AI-generated)
date: 2026-04-28
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-40980/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: file_event
detection:
  selection:
      TargetFilename|contains:
          - '.pdf'
      EventType|exact:
          - 'create'
  selection_base:
      TargetFilename|contains:
          - '.pdf'
  selection_indicators:
      TargetFilename|contains:
          - 'malicious.pdf'
  condition: selection_base AND selection_indicators
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse