CVE-2026-45278 (GCVE-0-2026-45278)
Vulnerability from cvelistv5
Published
2026-06-01 16:51
Modified
2026-06-02 15:20
CWE
  • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Summary
Nextcloud is an open source content collaboration platform. From version 6.1.0 to before version 8.2.2, an attacker can craft links that would redirect users to another website, when the victim uses the attackers link to log in via user OIDC. This issue has been patched in version 8.2.2.
Impacted products
Vendor Product Version
nextcloud security-advisories Version: >= 6.1.0, < 8.2.2
Create a notification for this product.
Show details on NVD website


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            "other": {
              "content": {
                "id": "CVE-2026-45278",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2026-06-02T15:20:37.583262Z",
                "version": "2.0.3"
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          "dateUpdated": "2026-06-02T15:20:49.300Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
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      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-601",
              "description": "CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
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      "references": [
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          "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8wjr-5cg8-4w73",
          "tags": [
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          "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8wjr-5cg8-4w73"
        },
        {
          "name": "https://github.com/nextcloud/user_oidc/pull/1273",
          "tags": [
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        "advisory": "GHSA-8wjr-5cg8-4w73",
        "discovery": "UNKNOWN"
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      "title": "Nextcloud: Open Redirect in user_oidc login flow via protocol-relative URL bypass"
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    "dateReserved": "2026-05-11T18:41:13.157Z",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


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