Vulnerability-Lookup

CVE-2026-54321 (GCVE-0-2026-54321)

Vulnerability from cvelistv5 – Published: 2026-06-23 18:10 – Updated: 2026-06-25 12:43

Title

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

Summary

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.

Severity

7 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-25 12:43 UTC

CWE

CWE-613 - Insufficient Session Expiration
CWE-863 - Incorrect Authorization

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7771 records in the last 180 days details

References

1 reference

URL	Tags
https://github.com/daytonaio/daytona/security/adv…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version	CPE status
daytonaio	daytona	Affected: >= 0.101.0, < 0.184.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-54321

Vulnerability from fkie_nvd - Published: 2026-06-23 19:17 - Updated: 2026-06-25 13:16

Severity

7.0 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/daytonaio/daytona/security/advisories/GHSA-ww63-pv5x-vfc8

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "daytona",
          "vendor": "daytonaio",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.101.0, \u003c 0.184.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s visibility changed. This vulnerability is fixed in 0.184.0."
    }
  ],
  "id": "CVE-2026-54321",
  "lastModified": "2026-06-25T13:16:46.733",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 4.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
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    }
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}

GHSA-WW63-PV5X-VFC8

Vulnerability from github – Published: 2026-06-16 21:05 – Updated: 2026-07-20 21:14

Summary

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

Details

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/

Severity

7.0 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.183.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/daytonaio/daytona"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.101.0"
            },
            {
              "fixed": "0.184.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-54321"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-613",
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-16T21:05:13Z",
    "nvd_published_at": "2026-06-23T19:17:08Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nSandbox 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\u0027s visibility changed.\n\n### Impact\nWhen a sandbox owner changed a preview from public to private, the preview proxy could continue serving unauthenticated requests to that sandbox\u0027s 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\u0027s 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.\n\n### Patches\nFixed in v0.184.0. Sandbox visibility changes now invalidate the proxy\u0027s cached preview state immediately, so revoking a public preview takes effect on the next request.\n\n### Workarounds\nUpgrade to v0.184.0 or later. There is no configuration workaround for earlier versions.\n\n### Credit\nReported through Daytona\u0027s Vulnerability Disclosure Program by **mrknightnidu(nidalkhan)**.\n**Linkedin**: https://www.linkedin.com/in/mrknight-nidu-031340328/",
  "id": "GHSA-ww63-pv5x-vfc8",
  "modified": "2026-07-20T21:14:49Z",
  "published": "2026-06-16T21:05:13Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/daytonaio/daytona/security/advisories/GHSA-ww63-pv5x-vfc8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54321"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/daytonaio/daytona"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Daytona: Public sandbox previews remain accessible for up to one hour after being made private"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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CVE-2026-54321 (GCVE-0-2026-54321)

FKIE_CVE-2026-54321

GHSA-WW63-PV5X-VFC8

Summary

Impact

Patches

Workarounds

Credit

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Vulnerability timeline

Related by attack behaviour