gcdRadar
archive/Patch now/AIR-2026-1820
closedclosed 8 Nov 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-97677: IBM Langflow OSS Arbitrary File Read and Write

IBM Langflow OSS

An authenticated flow author in IBM Langflow OSS can write arbitrary file content and bypass file access isolation. Attackers can leverage a crafted index to read sensitive files accessible to the service process.

why this severityDisclosed vulnerability with a high CVSS score and no exploitation confirmed.

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

CVSS
8.1
EPSS
<0.01 · top 67% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
affected
1.0.0 through 1.12.2
first report
8 Nov 2026
last update
8 Nov 2026
CVE ids
CVE-2026-97677other records

What to do

Check vendor advisories for updates addressing CVE-2026-97677.

Timeline · 1

  1. 8 Nov 2026CVE-2026-97677: IBM Langflow OSS 1.0.0 through 1.12.2 An authenticated flow author could write attacker-controlled file content into any…

Sources · 1

Advisories and databases

  1. 2026-11-08
    CVE-2026-97677: IBM Langflow OSS 1.0.0 through 1.12.2 An authenticated flow author could write attacker-controlled file content into any…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-97677

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

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
arbitrary-file-readarbitrary-file-write
dates
happened 8 Nov 2026 · first reported 8 Nov 2026
origin
NVD
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 2026-11-08 23:35Z · updated 2026-11-08 23:35Z

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
# CVE-2026-97677: IBM Langflow OSS Arbitrary File Read and Write

https://gcdradar.vercel.app/incidents/cve-2026-97677-ibm-langflow-oss-arbitrary-file-read-and-writ · AIR-2026-1820 · closed 2026-11-08

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability): Disclosed vulnerability with a high CVSS score and no exploitation confirmed.
- Fix status: Fix status unknown
- First reported: 2026-11-08
- AI role: Attack on AI
- Products: IBM Langflow OSS
- CVE ids: CVE-2026-97677
- CVSS: 8.1

## Summary

An authenticated flow author in IBM Langflow OSS can write arbitrary file content and bypass file access isolation. Attackers can leverage a crafted index to read sensitive files accessible to the service process.

## What to do

Check vendor advisories for updates addressing CVE-2026-97677.

## Affected and fixed versions

- Affected: 1.0.0 through 1.12.2

## Latest updates

- 2026-11-08: CVE-2026-97677: IBM Langflow OSS 1.0.0 through 1.12.2 An authenticated flow author could write attacker-controlled file content into any… (https://nvd.nist.gov/vuln/detail/CVE-2026-97677)

## Sources

- 2026-11-08 NVD: CVE-2026-97677: IBM Langflow OSS 1.0.0 through 1.12.2 An authenticated flow author could write attacker-controlled file content into any… https://nvd.nist.gov/vuln/detail/CVE-2026-97677

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

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