FKIE_CVE-2026-123800
Vulnerability from fkie_nvd - Published: 2026-11-09 19:16 - Updated: 2026-11-12 22:18
Severity
Summary
SuperTokens Core is an open source authentication server. From 6.0.0 until 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, and 12.3.1, Multitenancy.checkPermissionsForCreateOrUpdate in src/main/java/io/supertokens/multitenancy/Multitenancy.java does not adequately authorize updates to a parent connection URI domain or the base tenant. In a licensed multi-tenant deployment with multiple applications under one non-default connection URI domain and separate api_keys, an attacker holding one application's valid API key can update the parent domain because the CUD-target branch checks the domain without requiring the source application and tenant to be public. Because api_keys is not protected, the attacker can replace the parent key and then sibling application keys, read or modify sibling users, obtain sessions as those users, establish persistence through a sibling dashboard user, and lock out the sibling application's own key. In the advisory's v2 create or update handlers, omitting the optional identifier produces a base-tenant target that skips the permission branches and enterprise-feature gate, allowing changes to firstFactors, required secondary factors, and recipe-enabled flags that affect login integrity and availability. The base-target variant still rejects coreConfig and does not establish key theft. This issue is fixed in versions 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, and 12.3.1.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"product": "supertokens-core",
"vendor": "supertokens",
"versions": [
{
"status": "affected",
"version": "\u003e= 6.0.0, \u003c 6.0.24"
},
{
"status": "affected",
"version": "\u003e= 7.0.0, \u003c 7.0.23"
},
{
"status": "affected",
"version": "\u003e= 8.0.0, \u003c 8.0.7"
},
{
"status": "affected",
"version": "\u003e= 9.0.0, \u003c 9.0.6"
},
{
"status": "affected",
"version": "\u003e= 9.1.0, \u003c 9.1.6"
},
{
"status": "affected",
"version": "\u003e= 9.2.0, \u003c 9.2.7"
},
{
"status": "affected",
"version": "\u003e= 9.3.0, \u003c 9.3.5"
},
{
"status": "affected",
"version": "\u003e= 10.0.0, \u003c 10.0.8"
},
{
"status": "affected",
"version": "\u003e= 10.1.0, \u003c 10.1.9"
},
{
"status": "affected",
"version": "\u003e= 11.0.0, \u003c 11.0.9"
},
{
"status": "affected",
"version": "\u003e= 11.1.0, \u003c 11.1.4"
},
{
"status": "affected",
"version": "\u003e= 11.2.0, \u003c 11.2.4"
},
{
"status": "affected",
"version": "\u003e= 11.3.0, \u003c 11.3.8"
},
{
"status": "affected",
"version": "\u003e= 11.4.0, \u003c 11.4.8"
},
{
"status": "affected",
"version": "\u003e= 12.0.0, \u003c 12.0.11"
},
{
"status": "affected",
"version": "\u003e= 12.1.0, \u003c 12.1.2"
},
{
"status": "affected",
"version": "\u003e= 12.2.0, \u003c 12.2.1"
},
{
"status": "affected",
"version": "\u003e= 12.3.0, \u003c 12.3.1"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "SuperTokens Core is an open source authentication server. From 6.0.0 until 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, and 12.3.1, Multitenancy.checkPermissionsForCreateOrUpdate in src/main/java/io/supertokens/multitenancy/Multitenancy.java does not adequately authorize updates to a parent connection URI domain or the base tenant. In a licensed multi-tenant deployment with multiple applications under one non-default connection URI domain and separate api_keys, an attacker holding one application\u0027s valid API key can update the parent domain because the CUD-target branch checks the domain without requiring the source application and tenant to be public. Because api_keys is not protected, the attacker can replace the parent key and then sibling application keys, read or modify sibling users, obtain sessions as those users, establish persistence through a sibling dashboard user, and lock out the sibling application\u0027s own key. In the advisory\u0027s v2 create or update handlers, omitting the optional identifier produces a base-tenant target that skips the permission branches and enterprise-feature gate, allowing changes to firstFactors, required secondary factors, and recipe-enabled flags that affect login integrity and availability. The base-target variant still rejects coreConfig and does not establish key theft. This issue is fixed in versions 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, and 12.3.1."
}
],
"id": "CVE-2026-123800",
"lastModified": "2026-11-12T22:18:51.470",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.9,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.1,
"impactScore": 6.0,
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
},
"published": "2026-11-09T19:16:46.647",
"references": [
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/13c3de170dd40dd217db0f6bd2bded0948476a42"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/1cc02b971f064c2fa2d9bc74b9e85795fdc6a7e5"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/1d9dcb03ce0691d9b8abee48f86cc2729a6008cb"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/337bb3eba812a5ee52d57854701820a0580b6050"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/4902b713f31306ca41148070d10b6185f0e85201"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/4d1ef0e177681f4f74995e4a25a17d224effe115"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/61bfd3ebde1cf4b092da85ee884fa15e288aad51"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/64dfa92c50a2ec288fe787ee5c2fad45548a6475"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/8db9b0c39f97f240e116821434d4eb3c907faccf"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/8e48ef856becbaaeb50ad4c915be1d7ce279416b"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/9b0d3a9fdbdcb48dd7dd9d520075bbefbae3cf9b"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/a186f1013c784de8a796a732e925e1870fec0f40"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/b58bc3d03549d20495df71c03ef5478799c184db"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/bf6184f027a99bd1b3b1df3d20e376dda6521399"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/c6d7dc7d73b9bb3075b3f7a1a0c0c5780430c292"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/df79f3b4399ef31aea4cb44cc7b65761a2cb94a7"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/e616f4002c31d256f9ff6cb3d3685b924ef53a6d"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/commit/ff9ca3ec53861a91996c4e9581fa6f2e01331736"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v10.0.8"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v10.1.9"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.0.9"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.1.4"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.2.4"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.3.8"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v11.4.8"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.0.11"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.1.2"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.2.1"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v12.3.1"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v6.0.24"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v7.0.23"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v8.0.7"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v9.0.6"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v9.1.6"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v9.2.7"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/releases/tag/v9.3.5"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/supertokens/supertokens-core/security/advisories/GHSA-4rf2-xqvf-8rcx"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-639"
},
{
"lang": "en",
"value": "CWE-863"
}
],
"source": "security-advisories@github.com",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.