CVE Explorer

CVE-2026-40263

Note Mark is an open-source note-taking application. In versions 0.19.1 and prior, the login endpoint performs bcrypt password verification only when the supplied username exists, returning immediately for nonexistent usernames. This timing discrepancy allows unauthenticated attackers to enumerate valid usernames by measuring response times, enabling targeted credential attacks. This issue has been fixed in version 0.19.2.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5a13c0e274650bc701ede11409ad09cac9aade4157a09f2cde08aef6f59c2349

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"note-mark","vendor":"enchant97","versions":[{"status":"affected","version":"< 0.19.2"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f3ff3ec3bacd294c570fb12031c0ccca2e1bcda60f32e012a96eb1ee0c3c9635 · sha256:2bb4f5453842a65a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:f3ff3ec3bacd294c570fb12031c0ccca2e1bcda60f32e012a96eb1ee0c3c9635 · sha256:2bb4f5453842a65a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-208","description":"CWE-208: Observable Timing Discrepancy","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f3ff3ec3bacd294c570fb12031c0ccca2e1bcda60f32e012a96eb1ee0c3c9635 · sha256:2bb4f5453842a65a… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b569d80396d323b067c00d45c034","tags":["x_refsource_MISC"],"url":"https://github.com/enchant97/note-mark/commit/cf4c6f6acf70b569d80396d323b067c00d45c034"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f3ff3ec3bacd294c570fb12031c0ccca2e1bcda60f32e012a96eb1ee0c3c9635 · sha256:2bb4f5453842a65a… · /containers/cna/references/1

{"name":"https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f3ff3ec3bacd294c570fb12031c0ccca2e1bcda60f32e012a96eb1ee0c3c9635 · sha256:2bb4f5453842a65a… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/enchant97/note-mark/security/advisories/GHSA-w6m9-39cv-2fwp"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f3ff3ec3bacd294c570fb12031c0ccca2e1bcda60f32e012a96eb1ee0c3c9635 · sha256:2bb4f5453842a65a… · /containers/adp/0/references/0

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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