CVE-2026-8859Disclosure(apple / langflow)

LOWCVSS 9.9 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch apple langflow systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow an attacker to write arbitrary files to unintended locations due to improper input validation in the APIRequest component. A path traversal vulnerability exists when the "Save to File" feature is enabled, where filenames extracted from HTTP response Content-Disposition headers are not sanitized before being joined to the temporary directory path. An attacker controlling an external HTTP server can supply crafted filename values containing path traversal sequences (e.g., ../), enabling arbitrary file writes to locations accessible by the Langflow process.

1.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-22

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • langflow
  • linux_kernel
  • macos
  • windows

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Products
langflowlinux_kernelmacoswindows

1 version affected across 4 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-19: 1Patch / Workaround · 2026-07-19: 1Technical Details · 2026-07-19: 107-19
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • ThreatAft@ThreatAft
    Disclosure

    🚨 Critical Langflow OSS Alert 5 vulnerabilities (4× CVSS 9.9, 1× CVSS 7.8) affect Langflow OSS 1.0.0–1.10.0, enabling RCE, privilege escalation & arbitrary file writes. 🔧 Upgrade to Langflow OSS 1.10.1 immediately. 🔗 https://threataft.com/articles/langflow-oss-critical-rce-vulnerabilities-cve-2026-9135-cve-2026-8476-cve-2026-8481-cve-2026-8635-cve-2026-8859?utm_source=twitter&utm_medium=social&utm_campaign=share #CyberSecurity #Langflow #AI #RCE https://t.co/LO5DM9Ctur

    Post summary

    The post announces five critical vulnerabilities in Langflow OSS, advises immediate upgrade to version 1.10.1, and lists key technical details such as CVSS scores and impact.

    1001020
    34 followersView on X
CPE platform detail4 entries

4 of 4 entries

PartVendorProductVersionTarget SWTarget HW
OSapplemacos---
Applangflowlangflow---
OSlinuxlinux_kernel---
OSmicrosoftwindows---

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