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CVE-2026-2742

An authentication bypass vulnerability exists in Vaadin 14.0.0 through 14.14.0, 23.0.0 through 23.6.6, 24.0.0 through 24.9.7 and 25.0.0 through 25.0.1, applications using Spring Security due to inconsistent path pattern matching of reserved framework paths. Accessing the /VAADIN endpoint without a trailing slash bypasses security filters, and allowing unauthenticated users to trigger framework initialization and create sessions without proper authorization. Users of affected versions using Spr
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d40727d9677f29922157258e63c158eabd4a6262c3dacfd5bb9fc62152ca9978
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"com.vaadin:vaadin","product":"vaadin","repo":"https://github.com/vaadin/platform","vendor":"vaadin","versions":[{"lessThanOrEqual":"14.14.0","status":"affected","version":"10.0.0","versionType":"maven"},{"lessThanOrEqual":"23.6.6","status":"affected","version":"15.0.0","versionType":"maven"},{"lessThanOrEqual":"24.9.7","status":"affected","version":"24.0.0","versionType":"maven"},{"lessThanOrEqual":"25.0.1","status":"affected","version":"25.0.0","versionType":"maven"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/affected/0

{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"com.vaadin:flow-server","product":"flow","repo":"https://github.com/vaadin/flow","vendor":"vaadin","versions":[{"lessThanOrEqual":"2.13.0","status":"affected","version":"1.0.0","versionType":"maven"},{"lessThanOrEqual":"23.6.7","status":"affected","version":"3.0.0","versionType":"maven"},{"lessThanOrEqual":"24.9.7","status":"affected","version":"24.0.0","versionType":"maven"},{"lessThan":"25.0.1","status":"affected","version":"25.0.0","versionType":"maven"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"com.vaadin:vaadin","product":"vaadin","repo":"https://github.com/vaadin/platform","vendor":"vaadin","versions":[{"lessThanOrEqual":"14.14.0","status":"affected","version":"10.0.0","versionType":"maven"},{"lessThanOrEqual":"23.6.6","status":"affected","version":"15.0.0","versionType":"maven"},{"lessThanOrEqual":"24.9.7","status":"affected","version":"24.0.0","versionType":"maven"},{"lessThanOrEqual":"25.0.1","status":"affected","version":"25.0.0","versionType":"maven"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/affected/0
{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"com.vaadin:flow-server","product":"flow","repo":"https://github.com/vaadin/flow","vendor":"vaadin","versions":[{"lessThanOrEqual":"2.13.0","status":"affected","version":"1.0.0","versionType":"maven"},{"lessThanOrEqual":"23.6.7","status":"affected","version":"3.0.0","versionType":"maven"},{"lessThanOrEqual":"24.9.7","status":"affected","version":"24.0.0","versionType":"maven"},{"lessThan":"25.0.1","status":"affected","version":"25.0.0","versionType":"maven"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"YES","Recovery":"AUTOMATIC","Safety":"NEGLIGIBLE","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"AMBER","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"DIFFUSE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/S:N/AU:Y/R:A/V:D/RE:L/U:Amber","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityI…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-284","description":"CWE-284 Improper Access Control","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"url":"https://github.com/vaadin/flow/pull/22998"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/references/1
{"url":"https://github.com/vaadin/flow/pull/23033"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/references/6
{"url":"https://github.com/vaadin/flow/pull/23034"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/references/5
{"url":"https://github.com/vaadin/flow/pull/23037"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/references/2
{"url":"https://github.com/vaadin/flow/pull/23052"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/references/4
{"url":"https://github.com/vaadin/flow/pull/23057"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/references/3
{"url":"https://vaadin.com/security/cve-2026-2742"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:de7a57ef79f1d2b5031afc983c6d9347adf1b24502eaf5453cf6d068c6077b2b · sha256:92f2418fbc13618e… · /containers/cna/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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