Detections
Analytics

Langflow < 1.9.0 Multiples Vulnerabilities

critical Web App Scanning Plugin ID 115277

Synopsis

Langflow < 1.9.0 Multiples Vulnerabilities

Description

According to its banner, the version of Langflow running on the remote host is prior to 1.9.0. It is, therefore, affected by a multiples vulnerabilities :

- An Authenticated Code Execution in agentic assistant validation

- An Unauthenticated Remote Code Execution via public flow build endpoint

- A Path Traversal in knowledge bases API via bulk delete endpoint

- An Arbitrary File Write (RCE) through the V2 API

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 1.9.0 or later.

See Also

https://github.com/langflow-ai/langflow/security/advisories/GHSA-9whx-c884-c68q

https://github.com/langflow-ai/langflow/security/advisories/GHSA-g2j9-7rj2-gm6c

https://github.com/langflow-ai/langflow/security/advisories/GHSA-v8hw-mh8c-jxfc

https://github.com/langflow-ai/langflow/security/advisories/GHSA-vwmf-pq79-vjvx

Plugin Details

Severity: Critical

ID: 115277

Type: Version Based

Published: 7/3/2026

Updated: 7/3/2026

Scan Template: basic, full, pci, scan

Risk Information

VPR

Risk Factor: Critical

Score: 9.5

Percentile: 99.86

CVSS v2

Risk Factor: Critical

Base Score: 10

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

CVSS Score Source: CVE-2026-33017

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:H

CVSS Score Source: CVE-2026-33309

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

CVSS Score Source: CVE-2026-33017

Vulnerability Information

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

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 3/16/2026

CISA Known Exploited Vulnerability Due Dates: 4/8/2026

Reference Information

CVE: CVE-2026-33017, CVE-2026-33309, CVE-2026-33873, CVE-2026-42048

CWE: 20, 22, 284, 306, 73, 94, 95

OWASP: 2010-A1, 2010-A3, 2010-A4, 2010-A8, 2013-A1, 2013-A2, 2013-A4, 2013-A7, 2017-A1, 2017-A2, 2017-A5, 2021-A1, 2021-A3, 2021-A4, 2021-A7, 2025-A1, 2025-A5, 2025-A6, 2025-A7

WASC: Improper Input Handling, Insufficient Authentication, Insufficient Authorization, OS Commanding, Path Traversal

CAPEC: 10, 101, 104, 108, 109, 110, 12, 120, 126, 13, 135, 136, 14, 153, 166, 182, 19, 209, 22, 23, 230, 231, 24, 242, 250, 261, 267, 28, 3, 31, 35, 36, 42, 43, 441, 45, 46, 47, 473, 478, 479, 502, 503, 52, 53, 536, 546, 550, 551, 552, 556, 558, 562, 563, 564, 578, 588, 62, 63, 64, 67, 7, 71, 72, 73, 76, 77, 78, 79, 8, 80, 81, 83, 85, 88, 9

DISA STIG: APSC-DV-000460, APSC-DV-002510, APSC-DV-002560

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.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-SI-10

OWASP API: 2019-API7, 2019-API8, 2023-API8

OWASP ASVS: 4.0.2-1.4.2, 4.0.2-12.3.1, 4.0.2-12.3.2, 4.0.2-3.7.1, 4.0.2-5.1.3, 4.0.2-5.2.5

PCI-DSS: 3.2-6.5, 3.2-6.5.1, 3.2-6.5.10, 3.2-6.5.8