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archive/Patch now/AIR-2026-0883
closedclosed 4 Aug 2026Patch now2 Disclosed vulnerabilityAI

Flowise authenticated arbitrary file write in S3 Directory document loader

Flowise

An authenticated arbitrary file write vulnerability exists in the Flowise S3 Directory document loader via unsanitized object keys. Users with specific preview permissions can trigger path manipulation issues.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

fix status
Fix status unknown
first report
4 Aug 2026
last update
4 Aug 2026

Timeline · 1

  1. 4 Aug 2026GHSA-88pr-878c-24wf: Flowise: Authenticated arbitrary file write in the `S3 Directory` document loader via unsanitized S3 object keys…

Sources · 1

Advisories and databases

  1. 2026-08-04
    GHSA-88pr-878c-24wf: Flowise: Authenticated arbitrary file write in the `S3 Directory` document loader via unsanitized S3 object keys…
    GitHub Advisory Database · github.com/advisories/GHSA-88pr-878c-24wf

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Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
ghsa-88pr-878c-24wfarbitrary-file-write
dates
happened 4 Aug 2026 · first reported 4 Aug 2026
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 07:00Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# Flowise authenticated arbitrary file write in S3 Directory document loader

https://gcdradar.vercel.app/incidents/flowise-authenticated-arbitrary-file-write-in-s3-directory-d · AIR-2026-0883 · closed 2026-08-04

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-08-04
- AI role: Attack on AI
- Products: Flowise

## Summary

An authenticated arbitrary file write vulnerability exists in the Flowise S3 Directory document loader via unsanitized object keys. Users with specific preview permissions can trigger path manipulation issues.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-08-04: GHSA-88pr-878c-24wf: Flowise: Authenticated arbitrary file write in the `S3 Directory` document loader via unsanitized S3 object keys… (https://github.com/advisories/GHSA-88pr-878c-24wf)

## Sources

- 2026-08-04 GitHub Advisory Database: GHSA-88pr-878c-24wf: Flowise: Authenticated arbitrary file write in the `S3 Directory` document loader via unsanitized S3 object keys… https://github.com/advisories/GHSA-88pr-878c-24wf

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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