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CVE-2026-81268

Langflow is vulnerable to authentication bypass and insufficient session expiration

HIGH
8.1
CVSS Score
Published: September 10, 2026 at 09:31 PM UTC
Updated: September 16, 2026 at 01:10 AM UTC
1 product affected across 1 vendorLangflow

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Severity
HIGH8.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute flows and obtain sensitive information due to insufficient session expiration of API keys after user deactivation.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Langflow· Langflow
95%
1.0.0 ≤ v ≤ 1.11.51.0.0
Affected range stops below 1.11.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://www.ibm.com/support/pages/node/7286662

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHibm
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-613

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