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3192 articles · 168085 vulns · 37/41 feeds (7d)
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9.9
CVE-2026-55255KEVEXPLOITEDPATCHED
langflow · langflow

Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow

Description

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.2, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. This vulnerability is fixed in 1.9.2.

Affected Products

VendorProductVersions
langflowlangflow< 1.9.2

Also Affects

Downstream vendors/products affected by this vulnerability

VendorProductSourceConfidence
open sourcelangflowcert_advisory90%

References

  • https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2(x_refsource_CONFIRM)
  • https://github.com/langflow-ai/langflow/pull/12832(x_refsource_MISC)

Related News (2 articles)

Tier C
VulDB4d ago
CVE-2026-55255 | langflow-ai langflow up to 1.9.1 /api/v1/responses authorization (GHSA-qrpv-q767-xqq2)
→ No new info (linked only)
Tier B
BSI Advisories5d ago
[NEU] [hoch] Langflow: Mehrere Schwachstellen
→ No new info (linked only)
CVSS 3.19.9 CRITICAL
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
CISA KEV✅ Yes
Actively exploited✅ Yes
Patch available
langflow@1.9.1
CWECWE-639
PublishedJun 19, 2026
Tags
GHSA-qrpv-q767-xqq2pip
Trending Score68
Source articles2
Independent2
Info Completeness0/14
Missing: cve_id, title, description, vendor, product, versions, cvss, epss, cwe, kev, exploit, patch, iocs, mitre_attack

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Related CVEs (5)

MEDIUMCVE-2026-55446EXP
Langflow: Unauthenticated DoS through multipart form boundary file upload
Trending: 39
CRITICALCVE-2026-48519EXP
Langflow: Unauthenticated RCE in Shareable Playgrounds
Trending: 39
CRITICALCVE-2026-42867EXP
Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint
Trending: 36
HIGHCVE-2026-55450EXP
Langflow: Unauthenticated file upload leads to DoS (space exhaustion) and information leak
Trending: 34
HIGHCVE-2026-55423
Langflow: Logout button does not clear session
Trending: 32

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
Jun 19, 2026
Added to CISA KEV
Jun 19, 2026
Discovered by ZDM
Jun 19, 2026
Actively Exploited
Jun 24, 2026
Patch Available
Jun 24, 2026