[UPDATE] [high] Langflow: Multiple vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities allow an attacker to execute arbitrary code, bypass security measures, manipulate data, disclose confidential information, or cause a denial-of-service condition.

Who is affected

Deployments of Langflow are affected by these vulnerabilities.

Urgency

Remediation is urgent due to the high severity and confirmed exploitation of these vulnerabilities.

Action

Apply the latest security updates to Langflow.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

high

Published

2026-07-08

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2030

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-128220.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all scored CVEs.
• Low exploitation riskCVE-2026-552550.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all scored CVEs.
• Low exploitation riskCVE-2026-554230.15% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 5% of all scored CVEs.
• Low exploitation riskCVE-2026-554460.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.
• Low exploitation riskCVE-2026-554470.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• unknownexploitedLangflow security advisory (AV26-670)cccs
• highexploitedCISA Adds Three Known Exploited Vulnerabilities to Catalogcisa
• criticalexploitedCVE-2026-55255: Langflow Authorization Bypass Through User-Controlled Key Vulnerabilitycisa-kev
• highexploitedGHSA-qrpv-q767-xqq2: Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attacke…ghsa

Recent advisories for Langflow

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• medium[NEW] [medium] IBM Langflow Desktop OSS: Vulnerability allows information disclosurecert-bund · 2026-07-10
• unknownexploitedLangflow security advisory (AV26-670)cccs · 2026-07-08
• criticalexploitedCVE-2026-55255: Langflow Authorization Bypass Through User-Controlled Key Vulnerabilitycisa-kev · 2026-07-07
• criticalCVE-2026-7874: IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow disclosure of all stored credentials…nvd · 2026-06-30
• criticalCVE-2026-7873: IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS co…nvd · 2026-06-30
• criticalCVE-2026-7871: IBM Langflow OSS 1.0.0 through 1.10.0 allows users with Redis access to execute arbitrary code …nvd · 2026-06-30

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