CVE-2026-7873: Code Injection Vulnerability in Code Validation Endpoint
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-04 15:41 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.
Description quoted from the CVE record (assigned by ibm, published 2026-06-30).
Weakness: CWE-94 Improper Control of Generation of Code (‘Code Injection’)
How it can be exploited
Exploitable over the network with low attack complexity needing low privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA assessment (SSVC): CISA has no evidence of exploitation. Automatable: no. Technical impact: total.
Public exploit evidence (Exploit Observer)
Exploit Observer found 1 Metasploit module, 1 Nuclei template and 4 code repositories naming this CVE.
Code repositories that name a CVE are often scanners, copies or fakes, and some are malware. Read the code before running anything.
See all 12 references on Exploit Observer
Live scores
- EPSS
- 0.062
some chance of attack soon - VEDAS
- 0.979
strong exploit evidence - On CISA KEV
- Not listed
- Detection rule
- Suricata
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| IBM Langflow OSS | from 1.0.0 up to and including 1.10.0 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
Vendor guidance:
- https://www.ibm.com/support/pages/node/7278441 (vendor-advisory, patch)
How to detect it
Suricata rules (network detection)
1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-7873 IBM Langflow validate/code - Code Injection Attempt. Add them to your Suricata rule set and reload.
Show the rules
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-7873 IBM Langflow validate/code - Code Injection Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/v1/validate/code"; nocase; fast_pattern; http.request_body; content:"code"; nocase; pcre:"/(?:__import__|os\.system|subprocess|eval\x28|exec\x28|\x5f\x5fclass\x5f\x5f)/i"; classtype:web-application-attack; reference:cve,CVE-2026-7873; reference:url,https://www.exploit.observer/?keyword=CVE-2026-7873&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=langflow&match=exact; sid:1049902; rev:1;)
References
Vendor advisories and patches
- https://www.ibm.com/support/pages/node/7278441 (vendor-advisory, patch)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
Supporting partners
