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CVE-2026-45691

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, a pre-2FA session cookie (created after successful password authentication but before TOTP completion) could be reused as a Bearer token to authenticate against DAV endpoints, granting read/write access and bypassing mandatory two-factor authentication. It is recommended that the Nextcloud Server is upgraded to 33.0.3 or 32.0.9. It is recommended tha
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:975ff67300b656f2c48443f85160cd82c7657c79389260b4e99c3e018f83b554
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"security-advisories","vendor":"nextcloud","versions":[{"status":"affected","version":">= 32.0.0, < 32.0.9"},{"status":"affected","version":">= 33.0.0, < 33.0.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:effa39b46fb91376246bc09040efea86c8800e3dcdffecc2961d218f3c60d6d9 · sha256:f9b00d123500d7e5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:effa39b46fb91376246bc09040efea86c8800e3dcdffecc2961d218f3c60d6d9 · sha256:f9b00d123500d7e5… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"CWE-287: Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:effa39b46fb91376246bc09040efea86c8800e3dcdffecc2961d218f3c60d6d9 · sha256:f9b00d123500d7e5… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mp6x-g55j-w9jw","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mp6x-g55j-w9jw"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:effa39b46fb91376246bc09040efea86c8800e3dcdffecc2961d218f3c60d6d9 · sha256:f9b00d123500d7e5… · /containers/cna/references/0
{"name":"https://github.com/nextcloud/server/pull/59758","tags":["x_refsource_MISC"],"url":"https://github.com/nextcloud/server/pull/59758"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:effa39b46fb91376246bc09040efea86c8800e3dcdffecc2961d218f3c60d6d9 · sha256:f9b00d123500d7e5… · /containers/cna/references/1
{"name":"https://hackerone.com/reports/3573399","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3573399"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:effa39b46fb91376246bc09040efea86c8800e3dcdffecc2961d218f3c60d6d9 · sha256:f9b00d123500d7e5… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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