gcdRadar
archive/Patch now/AIR-2026-1249
closedclosed 5 Aug 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-10547: IBM Langflow OSS Ownership Validation Flaw

IBM Langflow OSS

IBM Langflow OSS lacks proper ownership validation in a deprecated build endpoint, allowing arbitrary graph data injection into shared caches. This results in cross-user cache pollution and unauthorized workflow execution.

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
5.9
EPSS
<0.01 · top 65% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
5 Aug 2026
last update
5 Aug 2026
CVE ids
CVE-2026-10547other records

Timeline · 1

  1. 5 Aug 2026CVE-2026-10547: IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST…

Sources · 1

Advisories and databases

  1. 2026-08-05
    CVE-2026-10547: IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-10547

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
cache-pollution
dates
happened 5 Aug 2026 · first reported 5 Aug 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 2026-10-18 10:04Z · updated 2026-10-18 10:04Z

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-2026-10547: IBM Langflow OSS Ownership Validation Flaw

https://gcdradar.vercel.app/incidents/cve-2026-10547-ibm-langflow-oss-ownership-validation-flaw · AIR-2026-1249 · closed 2026-08-05

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-08-05
- AI role: Attack on AI
- Products: IBM Langflow OSS
- CVE ids: CVE-2026-10547
- CVSS: 5.9

## Summary

IBM Langflow OSS lacks proper ownership validation in a deprecated build endpoint, allowing arbitrary graph data injection into shared caches. This results in cross-user cache pollution and unauthorized workflow execution.

## What to do

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

## Latest updates

- 2026-08-05: CVE-2026-10547: IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST… (https://nvd.nist.gov/vuln/detail/CVE-2026-10547)

## Sources

- 2026-08-05 NVD: CVE-2026-10547: IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST… https://nvd.nist.gov/vuln/detail/CVE-2026-10547

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

Related

  1. closed8.6
    Langflow CVE-2026-19305 in IBM Langflow OSS features severe server-side request forgery flaw

    Patch now · Disclosed · since 4 Sep 2026 · CVE-2026-19305

    AI
  2. closed6.5
    Langflow CVE-2026-19299 in IBM Langflow OSS permits path traversal leading to information disclosure

    Patch now · Disclosed · since 4 Sep 2026 · CVE-2026-19299

    AI
  3. closed5.0
    Langflow CVE-2026-19301 in IBM Langflow OSS enables server-side request forgery for data access

    Patch now · Disclosed · since 4 Sep 2026 · CVE-2026-19301

    AI
  4. closed7.5
    Langflow CVE-2026-19300 in IBM Langflow OSS exposes sensitive credentials via incomplete scrubbing

    Patch now · Disclosed · since 4 Sep 2026 · CVE-2026-19300

    AI
  5. closed6.5
    Langflow CVE-2026-19302 in IBM Langflow OSS allows information disclosure via symlink validation

    Patch now · Disclosed · since 4 Sep 2026 · CVE-2026-19302

    AI
  6. closed7.5
    Langflow CVE-2026-19875: IBM Langflow OSS missing authentication vulnerability

    Patch now · Disclosed · since 19 Aug 2026 · CVE-2026-19875

    AI