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VulnerabilityPublished

CVE-2026-120308: beam-cloud Beta9 gateway · Path Traversal

Affects beam-cloud Beta9 gatewaySource CVE Database V5

0
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Not known to be exploited · CVSS 9.9 Critical : upgrade to 0.1.776 as a priority.

Data as of 1 Nov 2026, 13:14 UTC

CVSS 3.1 base score
9.9Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (JFROG)CVSS 3.19.9
Patch
Available – fixed in 0.1.776, 0.1.756
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

Upgrade Beta9 gateway to 0.1.776; Beta9 worker to 0.1.756; github.com/beam-cloud/beta9 to 0.1.776 or 0.1.756.

Affected software

ProductAffectedFixed in
Beta9 gatewaygithub.com/beam-cloud/beta9Affected
  • <0.1.776
Fixed in
  • 0.1.776
Beta9 workergithub.com/beam-cloud/beta9Affected
  • <0.1.756
Fixed in
  • 0.1.756
GitHubgithub.com/beam-cloud/beta9pkg:github/github.com/beam-cloud/beta9Other threatsAffected
  • <0.1.776
  • <0.1.756
Fixed in
  • 0.1.776
  • 0.1.756

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

The vulnerability has been fixed in gateway version 0.1.776 and worker version 0.1.756. Users should upgrade to these or later versions to ensure volume identifiers and mount paths are properly validated and unauthorized volumes are rejected. No additional mitigation is required once these versions are deployed.

Description

CVE-2026-120308 is a critical path traversal vulnerability in the beam-cloud Beta9 gateway that allows a tenant with a workspace token to read and write arbitrary files on the worker's filesystem. This occurs because the gateway improperly validates volume identifiers when attaching volumes during function, endpoint, or task queue deployment. The vulnerability affects gateway versions prior to 0.1.776 and worker versions prior to 0.1.756. The issue has been fixed by validating volume identifiers and mount paths and rejecting unauthorized volumes.

References

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