EUVD-2026-38565Published

Daytona: Public sandbox previews remain accessible for up to one hour after being made private

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-54321

Published

Daytona is a secure and elastic infrastructure runtime for AI-generated code execution and agent workflows. From 0.101.0 until 0.184.0, sandbox previews that were switched from public to private could remain reachable without authentication for a short period after the change, due to a cached visibility state that was not invalidated when the sandbox's visibility changed. This vulnerability is fixed in 0.184.0.

Source published: 23 Jun 2026 18:10:05 UTC
Source modified: 25 Jun 2026 12:43:20 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

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CVSS 3.1 · 7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

euvd · EUVD-2026-38565

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Jun 23, 2026, 6:10:05 PM

dateUpdated: Jun 25, 2026, 12:43:20 PM

Source published: Jun 23, 2026, 6:10:05 PM (timezone not stated)
Source modified: Jun 25, 2026, 12:43:20 PM (timezone not stated)
Observed here: 7 Nov 2026 12:29:34 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 3.1 · 7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

nvd · CVE-2026-54321

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-613 · CWE-863

Original publisher date fields

published: 2026-06-23T19:17:08.190

lastModified: 2026-10-25T23:10:00.167

Source published: 23 Jun 2026 19:17:08 UTC
Source modified: 25 Oct 2026 23:10:00 UTC
Observed here: 27 Oct 2026 14:13:32 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

osv · GHSA-ww63-pv5x-vfc8

Published

### Summary Sandbox previews that were switched from public to private could remain reachable without authentication for a short period after the change, due to a cached visibility state that was not invalidated when the sandbox's visibility changed. ### Impact When a sandbox owner changed a preview from public to private, the preview proxy could continue serving unauthenticated requests to that sandbox's ordinary preview ports for a bounded period before the change took effect. Only sandboxes that had been made public and were later set back to private were affected, and only until the proxy's cached visibility state was refreshed. Terminal, toolbox, and recording-dashboard ports were never affected, as those always require authentication. The issue did not involve cross-tenant access, privilege escalation, or remote code execution. ### Patches Fixed in v0.184.0. Sandbox visibility changes now invalidate the proxy's cached preview state immediately, so revoking a public preview takes effect on the next request. ### Workarounds Upgrade to v0.184.0 or later. There is no configuration workaround for earlier versions. ### Credit Reported through Daytona's Vulnerability Disclosure Program by **mrknightnidu(nidalkhan)**. **Linkedin**: https://www.linkedin.com/in/mrknight-nidu-031340328/

Source published: 16 Jun 2026 21:05:13 UTC
Source modified: 20 Jul 2026 21:30:44 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

Publisher rating · HIGH

osv · GO-2026-5729

Published

Daytona: Public sandbox previews remain accessible for up to one hour after being made private in github.com/daytonaio/daytona

Source published: 25 Jun 2026 22:34:38 UTC
Source modified: 25 Jun 2026 23:01:41 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.