Langflow < 1.9.1 Multiples Vulnerabilities

critical Web App Scanning Plugin ID 115276

Synopsis

Langflow < 1.9.1 Multiples Vulnerabilities

Description

According to its banner, the version of Langflow running on the remote host is prior to 1.9.1. It is, therefore, affected by a multiples vulnerabilities :

- An Indirect Object Reference (IDOR) in /api/v1/responses that allows authenticated attacker to access another user's Flow

- An Unauthenticated file upload that an lead to a Denial Of Service (DoS)and information leak

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Langflow version 1.9.1 or later.

See Also

https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2

https://github.com/langflow-ai/langflow/security/advisories/GHSA-x223-p2gf-v735

Plugin Details

Severity: Critical

ID: 115276

Type: Version Based

Family: Artificial Intelligence

Published: 7/3/2026

Updated: 7/3/2026

Scan Template: basic, full, pci, scan

Risk Information

VPR

Risk Factor: High

Score: 8

Percentile: 99.68

CVSS v2

Risk Factor: High

Base Score: 8.7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:P

CVSS Score Source: CVE-2026-55255

CVSS v3

Risk Factor: Critical

Base Score: 9.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

CVSS Score Source: CVE-2026-55255

Vulnerability Information

CPE: cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 6/16/2026

Reference Information

CVE: CVE-2026-55255, CVE-2026-55450

CWE: 200, 306, 400, 639

OWASP: 2010-A3, 2010-A6, 2010-A8, 2013-A2, 2013-A5, 2013-A7, 2017-A2, 2017-A5, 2017-A6, 2021-A1, 2021-A7, 2025-A1, 2025-A7

WASC: Denial of Service, Information Leakage, Insufficient Authentication, Insufficient Authorization

CAPEC: 116, 12, 13, 147, 166, 169, 197, 22, 224, 285, 287, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 312, 313, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 36, 472, 492, 497, 508, 573, 574, 575, 576, 577, 59, 60, 616, 62, 643, 646, 651, 79

DISA STIG: APSC-DV-000460, APSC-DV-002400

HIPAA: 164.306(a)(1), 164.306(a)(2), 164.312(a), 164.312(a)(1), 164.312(a)(2)(i), 164.312(e)

ISO: 27001-A.12.6.1, 27001-A.13.1.1, 27001-A.14.1.2, 27001-A.14.1.3, 27001-A.14.2.5, 27001-A.18.1.3, 27001-A.6.2.2, 27001-A.9.1.2, 27001-A.9.2.3, 27001-A.9.4.1, 27001-A.9.4.4, 27001-A.9.4.5

NIST: sp800_53-AC-3, sp800_53-AC-6(1), sp800_53-SC-5, sp800_53-SI-15

OWASP API: 2019-API7, 2023-API8

OWASP ASVS: 4.0.2-3.7.1, 4.0.2-8.3.4

PCI-DSS: 3.2-2.2, 3.2-6.5.10, 3.2-6.5.8