CVE-2026-73278 (GCVE-0-2026-73278)
Vulnerability from cvelistv5 – Published: 2026-10-06 19:33 – Updated: 2026-10-06 19:33
VLAI
EPSS
VEX
Title
Gitea WebAuthn bypass during OAuth and OIDC sign-in
Summary
Gitea's OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account's only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during password login. One affected path can also persist an external identity link, extending the compromise beyond the initial session; accounts with TOTP configured are outside the reported WebAuthn-only scenario.
Severity
No CVSS data available.
CWE
- CWE-287 - Improper Authentication
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/go-gitea/gitea/security/adviso… | vendor-advisory |
| https://blog.gitea.com/release-of-1.27.2/ | release-notes |
| https://github.com/go-gitea/gitea/pull/38805 | patch |
| https://github.com/go-gitea/gitea/pull/38810 | patch |
| https://github.com/go-gitea/gitea/releases/tag/v1.27.2 | release-notes |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageName": "gitea.dev",
"product": "Gitea",
"vendor": "Gitea",
"versions": [
{
"lessThanOrEqual": "1.27.1",
"status": "affected",
"version": "1.16.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "https://github.com/MindflareX"
},
{
"lang": "en",
"type": "reporter",
"value": "https://github.com/AdamKorcz"
},
{
"lang": "en",
"type": "reporter",
"value": "https://github.com/jaeyoon-kim-dev"
}
],
"descriptions": [
{
"lang": "en",
"value": "Gitea\u0027s OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account\u0027s only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during password login. One affected path can also persist an external identity link, extending the compromise beyond the initial session; accounts with TOTP configured are outside the reported WebAuthn-only scenario."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "CWE-287: Improper Authentication",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-06T19:33:54.375Z",
"orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"shortName": "Gitea"
},
"references": [
{
"name": "GitHub Security Advisory GHSA-92j2-6qcg-c28c",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-92j2-6qcg-c28c"
},
{
"name": "Gitea 1.27.2 release announcement",
"tags": [
"release-notes"
],
"url": "https://blog.gitea.com/release-of-1.27.2/"
},
{
"name": "Fix: go-gitea/gitea pull request #38805",
"tags": [
"patch"
],
"url": "https://github.com/go-gitea/gitea/pull/38805"
},
{
"name": "Fix: go-gitea/gitea pull request #38810",
"tags": [
"patch"
],
"url": "https://github.com/go-gitea/gitea/pull/38810"
},
{
"name": "go-gitea/gitea v1.27.2 release",
"tags": [
"release-notes"
],
"url": "https://github.com/go-gitea/gitea/releases/tag/v1.27.2"
}
],
"title": "Gitea WebAuthn bypass during OAuth and OIDC sign-in"
}
},
"cveMetadata": {
"assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"assignerShortName": "Gitea",
"cveId": "CVE-2026-73278",
"datePublished": "2026-10-06T19:33:54.375Z",
"dateReserved": "2026-08-13T16:50:59.760Z",
"dateUpdated": "2026-10-06T19:33:54.375Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"packageName": "gitea.dev",
"product": "Gitea",
"vendor": "Gitea",
"versions": [
{
"lessThanOrEqual": "1.27.1",
"status": "affected",
"version": "1.16.0",
"versionType": "semver"
}
]
}
],
"source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Gitea\u0027s OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account\u0027s only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during password login. One affected path can also persist an external identity link, extending the compromise beyond the initial session; accounts with TOTP configured are outside the reported WebAuthn-only scenario."
}
],
"id": "CVE-2026-73278",
"lastModified": "2026-10-06T20:17:29.000",
"metrics": {},
"published": "2026-10-06T20:17:29.000",
"references": [
{
"source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"url": "https://blog.gitea.com/release-of-1.27.2/"
},
{
"source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"url": "https://github.com/go-gitea/gitea/pull/38805"
},
{
"source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"url": "https://github.com/go-gitea/gitea/pull/38810"
},
{
"source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"url": "https://github.com/go-gitea/gitea/releases/tag/v1.27.2"
},
{
"source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-92j2-6qcg-c28c"
}
],
"sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"vulnStatus": "Received",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
"type": "Secondary"
}
]
}
}
}
}
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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
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- Confirmed: The vulnerability has been validated from an analyst's perspective.
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- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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- 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.
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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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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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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