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CVE-2026-45690

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, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication (2FA) protections. When a user initiated login with valid credentials on a 2FA-enabled account, the system created a temporary session token before enforcing the second factor challenge. This token could be extracted an
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3b1a22a388a9ab3a5e398ea7096aca37b1f705a0775b5b8f58074bf9b2d397b4
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:v2:6d6d4143852bebe450f1610346601df34465d28bb9ce6b6613cf4747fd59721f · sha256:1771e27a81a0b079… · /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:v2:6d6d4143852bebe450f1610346601df34465d28bb9ce6b6613cf4747fd59721f · sha256:1771e27a81a0b079… · /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:v2:6d6d4143852bebe450f1610346601df34465d28bb9ce6b6613cf4747fd59721f · sha256:1771e27a81a0b079… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jgcj-v42r-9922","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jgcj-v42r-9922"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6d6d4143852bebe450f1610346601df34465d28bb9ce6b6613cf4747fd59721f · sha256:1771e27a81a0b079… · /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:v2:6d6d4143852bebe450f1610346601df34465d28bb9ce6b6613cf4747fd59721f · sha256:1771e27a81a0b079… · /containers/cna/references/1
{"name":"https://hackerone.com/reports/3639301","tags":["x_refsource_MISC"],"url":"https://hackerone.com/reports/3639301"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6d6d4143852bebe450f1610346601df34465d28bb9ce6b6613cf4747fd59721f · sha256:1771e27a81a0b079… · /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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