IBM Langflow OSS: Code injection enables OS command execution
Summary
IBM Langflow OSS versions 1.0.0 through 1.12.2 contain a code injection flaw (CWE-94) in how special elements are handled before OS commands run. A remote attacker with a valid, low-privilege account can execute arbitrary operating system commands on the host. Exploitation requires authentication but no user interaction, and the CVSS 3.1 base score is 8.1 (High). The vector reports high confidentiality and integrity impact and no availability impact.
Affected
- IBM Langflow OSS 1.0.0 to 1.12.2 (per the CVE record and the IBM bulletin)
Fixed in
- Upgrade to IBM Langflow OSS 1.12.3 (fix recommended by IBM and the CVE record)
Workaround
- No vendor workaround is listed. Restrict network access to Langflow to trusted users and networks until patched.
Exploitation
- CISA SSVC: exploitation none, not automatable, total technical impact.; - No public proof of concept found for this CVE.; - Not listed as known exploited (KEV) in the sources reviewed.; - Other Langflow CVEs are actively targeted, so attacker interest in this product is high.
Our recommendation
- Upgrade Langflow OSS to 1.12.3 or, preferably, the latest release, and confirm the exact fixed version per CVE on the IBM bulletin.; - Keep automatic login (LANGFLOW_AUTO_LOGIN) disabled, since auto-login weaknesses exist in affected releases.; - Do not expose Langflow directly to the internet; restrict access to trusted networks.; - Enforce strong, unique passwords and limit accounts to trusted people.; - Review logs for unusual logins and command execution, and check whether stored API keys or connected services must be rotated.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- IBM Security Bulletin: Langflow OSS is affected by multiple vulnerabilities www.ibm.com
- CVE-2026-97674 on Vulners (CIRCL) vulners.com
- CVE-2026-97674 on VulDB vuldb.com
- CVE-2026-97674 on Strix www.strix.ai
- IBM patches multiple Langflow OSS flaws (GBHackers) gbhackers.com
- Langflow vulnerabilities fixed in 1.12.3 (SecurityOnline) securityonline.info
- Langflow auto-login auth bypass CVE-2026-93680 (Ostorlab) blog.ostorlab.co
- CVE alert CVE-2026-97674 (Red Packet Security) www.redpacketsecurity.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 20:37.
Original description (NVD)
IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote authenticated attacker to execute arbitrary OS commands due to improper neutralization of special elements used in an OS command ('Code Injection'), aka improper control of code generation.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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