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CVE-2026-123800

CVE-2026-123800

validatedZero produced an exploit or a check.

GHSA-4rf2-xqvf-8rcx ↗EUVD-2026-120149 ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
supertokens supertokens-core >= 6.0.0, < 6.0.24; >= 7.0.0, < 7.0.23; >= 8.0.0, < 8.0.7; >= 9.0.0, < 9.0.6; >= 9.1.0, < 9.1.6; >= 9.2.0, < 9.2.7; >= 9.3.0, < 9.3.5; >= 10.0.0, < 10.0.8; >= 10.1.0, < 10.1.9; >= 11.0.0, < 11.0.9; >= 11.1.0, < 11.1.4; >= 11.2.0, < 11.2.4; >= 11.3.0, < 11.3.8; >= 11.4.0, < 11.4.8; >= 12.0.0, < 12.0.11; >= 12.1.0, < 12.1.2; >= 12.2.0, < 12.2.1; >= 12.3.0, < 12.3.1
fixed in 6.0.24, 7.0.23, 8.0.7, 9.0.6, 9.1.6, 9.2.7, 9.3.5, 10.0.8, 10.1.9, 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, 12.3.1
CWE-639 Authorization Bypass Through User-Controlled Key
ETK-2026-3985Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss9.9cna vendorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
+1h03mTTV
22mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0mcheck available+63magent stopped
0
+15min
+30min
+45min

description

Affected SuperTokens Core releases can improperly permit multitenancy configuration changes across application boundaries. In a licensed multi-tenant deployment where separately keyed applications share a non-default connection URI domain, an attacker with one application's valid API key may alter sibling authentication settings, access sibling user data, or interfere with their access.

mitigation

Upgrade supertokens-core to 6.0.24, 7.0.23, 8.0.7, 9.0.6, 9.1.6, 9.2.7, 9.3.5, 10.0.8, 10.1.9, 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, or 12.3.1, as appropriate for the deployed branch. Restrict and rotate application API keys, particularly in shared-domain multi-tenant deployments.

fixed in 6.0.24, 7.0.23, 8.0.7, 9.0.6, 9.1.6, 9.2.7, 9.3.5, 10.0.8, 10.1.9, 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, 12.3.1

check
available
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
yes, low privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
22m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-09 18:16Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual check: a technique exists and was validated, but no deterministic check could cover this one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-11-09 18:16Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-123800

this entry in the feed

GET /api/v1/feed/CVE-2026-123800

{
  "etk_id": "ETK-2026-3985",
  "cve_id": "CVE-2026-123800",
  "display_id": "CVE-2026-123800",
  "ghsa_id": "GHSA-4rf2-xqvf-8rcx",
  "euvd_id": "EUVD-2026-120149",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Authorization bypass in SuperTokens Core multitenancy updates",
  "summary": "Affected SuperTokens Core releases can improperly permit multitenancy configuration changes across application boundaries. In a licensed multi-tenant deployment where separately keyed applications share a non-default connection URI domain, an attacker with one application's valid API key may alter sibling authentication settings, access sibling user data, or interfere with their access.",
  "mitigation": "Upgrade supertokens-core to 6.0.24, 7.0.23, 8.0.7, 9.0.6, 9.1.6, 9.2.7, 9.3.5, 10.0.8, 10.1.9, 11.0.9, 11.1.4, 11.2.4, 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, or 12.3.1, as appropriate for the deployed branch. Restrict and rotate application API keys, particularly in shared-domain multi-tenant deployments.",
  "vendor": "supertokens",
  "product": "supertokens-core",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 6.0.0, < 6.0.24"
      ],
      "ecosystem": "other",
      "fixed_versions": [
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      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 7.0.0, < 7.0.23"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "7.0.23"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 8.0.0, < 8.0.7"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "8.0.7"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 9.0.0, < 9.0.6"
      ],
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        "9.0.6"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 9.1.0, < 9.1.6"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "9.1.6"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 9.2.0, < 9.2.7"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "9.2.7"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 9.3.0, < 9.3.5"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "9.3.5"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 10.0.0, < 10.0.8"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "10.0.8"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 10.1.0, < 10.1.9"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "10.1.9"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11.0.0, < 11.0.9"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "11.0.9"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11.1.0, < 11.1.4"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "11.1.4"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11.2.0, < 11.2.4"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "11.2.4"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11.3.0, < 11.3.8"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "11.3.8"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11.4.0, < 11.4.8"
      ],
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      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
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      "affected_ranges": [
        ">= 12.0.0, < 12.0.11"
      ],
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        "12.0.11"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 12.1.0, < 12.1.2"
      ],
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      "fixed_versions": [
        "12.1.2"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 12.2.0, < 12.2.1"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "12.2.1"
      ],
      "package_name": "supertokens-core",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 12.3.0, < 12.3.1"
      ],
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      "fixed_versions": [
        "12.3.1"
      ],
      "package_name": "supertokens-core",
      "purl": null
    }
  ],
  "cwes": [
    639
  ],
  "cvss_score": 9.9,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 21.65355735,
  "t0_at": "2026-11-09T18:16:08.303000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-09T19:19:15.562112+00:00",
      "days": 0.0438340175,
      "is_lower_bound": false,
      "measured_at": "2026-11-09T18:16:08.303000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-09T18:16:08.303000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-09T18:16:08.303000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-123800"
    }
  }
}

published 2026-11-09 18:57Z
last change 2026-11-11 05:00Z

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