Deserialization flaw in IBM Langflow OSS allows code execution
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.
Summary
IBM Langflow OSS from 1.0.0 through 1.12.3 is affected. Deserialization of untrusted data (CWE-502) lets a remote authenticated attacker with low privileges execute arbitrary code.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
Description from the CNA
IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to execute arbitrary code due to deserialization of untrusted data.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for IBM Langflow OSS.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
IBM Langflow OSS — ibm.com/support/pages/node/7293015
16 records Highest priority Priority MEDIUM 5 MEDIUM, 11 LOW
Other records, highest priority first
- TI-2026-82551 Command injection in IBM Langflow OSS enables remote code executionPriority MEDIUM 50
- TI-2026-82547 Deserialization flaw in IBM Langflow OSS allows remote code executionPriority MEDIUM 44
- TI-2026-82549 Code injection in IBM Langflow OSS lets attackers run codePriority MEDIUM 41
Timeline
- 2026-10-29 Threatist record created from CVE-2026-104324
- 2026-10-29 Alias added: GHSA-4pj3-vmg3-x8mv
- 2026-10-30 CISA SSVC decision points changed
- 2026-10-30 Priority changed: MEDIUM → LOW
- 2026-10-30 CISA SSVC decision points changed
- 2026-10-31 Priority changed: LOW → MEDIUM
References
More IBM vulnerabilities
- TI-2026-08085 Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation KEVCVSS 3.1CRITICAL 9.8
- TI-2022-23774 IBM Aspera Faspex code execution KEVCVSS 3.1CRITICAL 9.8
- TI-2020-03794 Improper authentication in IBM Data Risk Manager KEVCVSS 3.1CRITICAL 9.8
- TI-2019-03441 Code injection in IBM Planning Analytics KEVCVSS 3.1CRITICAL 9.8
- TI-2017-03639 Improper handling of exceptional conditions in Apache Struts KEVCVSS 3.1CRITICAL 9.8
- TI-2015-06198 Serialized-object interfaces in certain IBM analytics, business solutions, cognitive, IT… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-104324 · CVE Program
- CVE-2026-104324 · NVD
- FIRST EPSS
- GHSA-4pj3-vmg3-x8mv · GitHub Advisory Database · CC BY 4.0
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