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IBM Langflow OSS CVE-2026-81265

| EUVDEUVD-2026-75778 HIGH
Server-Side Request Forgery (SSRF) (CWE-918)
2026-09-10 ibm GHSA-j99h-p584-x29h
7.5
CVSS 3.1 · Vendor: ibm
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Severity by source

Vendor (ibm) PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
7.5 HIGH

Network-accessible, no auth required (PR:N), SSRF is read-only with no integrity or availability impact; scope unchanged as exploitation stays within the Langflow process boundary.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (ibm).

CVSS VectorVendor: ibm

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Sep 10, 2026 - 22:27 vuln.today
CVE Published
Sep 10, 2026 - 21:31 nvd
HIGH 7.5

DescriptionCVE.org

IBM Langflow OSS 1.0.0 through 1.11.5.

AnalysisAI

Server-Side Request Forgery in IBM Langflow OSS 1.0.0 through 1.11.5 allows unauthenticated remote attackers to coerce the server into issuing arbitrary outbound HTTP requests, exposing internal network services, cloud metadata endpoints (e.g., AWS IMDSv1 at 169.254.169.254), and other resources inaccessible to the attacker directly. The CVSS vector (AV:N/AC:L/PR:N/UI:N/C:H) confirms this requires no authentication and trivial network access, with high confidentiality impact. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation No special conditions beyond network reachability - the CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms remote unauthenticated exploitation against any network-accessible instance of IBM Langflow OSS 1.0.0-1.11.5. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) reflects a network-accessible, zero-authentication SSRF with high confidentiality impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation IBM has released a patch; consult the vendor advisory at https://www.ibm.com/support/pages/node/7286665 for the exact patched version and upgrade instructions. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all deployments of IBM Langflow OSS and determine version numbers; isolate any internet-facing instances if immediate patching is not possible. …

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CVE-2026-81265 vulnerability details – vuln.today

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