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TI-2026-76647 Aliases CVE-2026-109440

Prompt injection in LangAlpha lets attackers run shell commands

Priority HIGH 73CWE-1427Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

LangAlpha from ginlix-ai through 2026.09.07 contains an indirect prompt injection flaw (CWE-1427). The agent follows instructions planted in web content it retrieves, because the Bash and ExecuteCode tools lack an allow-list and human approval. A remote attacker can plant such instructions, then run shell commands or Python in the workspace sandbox and exfiltrate vault secrets. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

LangAlpha through 2026.09.07 contains an indirect prompt injection vulnerability that allows remote attackers to execute shell commands or Python by planting instructions in web content retrieved by the agent. Because Bash and ExecuteCode lack an allow-list and human-in-the-loop approval, attackers can run code in the workspace sandbox and exfiltrate vault secrets from _internal/.vault_secrets.json.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00601 48th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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

VendorProductAffected versionsFixed inStatusSource
ginlix-aiLangAlphaup to 2026.09.07—No fix listedCNA
  • LangAlpha Vendorginlix-ai Affected up to 2026.09.07 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for LangAlpha.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-109440
  2. 2026-10-21 Priority changed: MEDIUM → LOW
  3. 2026-10-23 CVSS score changed · CNA
  4. 2026-10-23 CISA SSVC decision points changed
  5. 2026-10-23 Priority changed: LOW → HIGH

References

Exploit 1

Other 1

  • TI-2026-76648 Improper isolation in LangAlpha exposes other tenants' sandboxes CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences