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TI-2026-34801 Aliases CVE-2026-47213GHSA-xjhv-pp2r-6f82

BoxLite: Timeout Bypass Vulnerability

Priority MEDIUM 62CWE-404Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-404.

Summary

Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers within them to run untrusted code. In versions 0.8.2 and prior, Boxlite allows users to configure a timeout for services running inside the virtual machine. When the timeout is triggered, Boxlite sends a signal to kill the process. However, instead of using the uncatchable SIGKILL signal, Boxlite uses the catchable SIGALRM signal. Malicious code running inside the sandbox can exploit this vulnerability to continue running after the timeout is triggered, leading to resource exhaustion within the virtual machine and affecting the availability of the Boxlite service. This issue has been patched via commit 28159fc.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00268 19th percentileScored 2026-11-07
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
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
boxlite-aiboxliteup to 0.8.2—No fix listedCNA
—boxlite (PyPI)up to 0.8.2—No fix listedGHSA-xjhv-pp2r-6f82
  • boxlite Vendorboxlite-ai Affected up to 0.8.2 Fixed in — No fix listed CNA
  • boxlite (PyPI) Vendor— Affected up to 0.8.2 Fixed in — No fix listed GHSA-xjhv-pp2r-6f82

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-47213
  2. 2026-10-03 Alias added: GHSA-xjhv-pp2r-6f82

References

Advisory 1

Other 3

  • TI-2026-34324 BoxLite: Permission Bypass in boxlite Allows Modification of Read-Only Files CVSS 3.1CRITICAL 10.0
  • TI-2026-34332 BoxLite: Path Traversal Vulnerability in boxlite Leads to Arbitrary File Write on the Host CVSS 3.1CRITICAL 9.6

Sources

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