CVE Explorer

CVE-2026-40103

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's scoped API token enforcement for custom project background routes is method-confused. A token with only projects.background can successfully delete a project background, while a token with only projects.background_delete is rejected. This is a scoped-token authorization bypass. This vulnerability is fixed in 2.3.0.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b98e2c35b93bbed2a6af402203b72d9b1ed3a8ff09714c51b3c3730889f02232

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"vikunja","vendor":"go-vikunja","versions":[{"status":"affected","version":"< 2.3.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4b30d96dfeaa2504e743b87f433aa4cda9e159bccf7cbc974d94c8036594a3e8 · sha256:24e65767b144f73c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:4b30d96dfeaa2504e743b87f433aa4cda9e159bccf7cbc974d94c8036594a3e8 · sha256:24e65767b144f73c… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-836","description":"CWE-836: Use of Password Hash Instead of Password for Authentication","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:4b30d96dfeaa2504e743b87f433aa4cda9e159bccf7cbc974d94c8036594a3e8 · sha256:24e65767b144f73c… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions

{"name":"https://github.com/go-vikunja/vikunja/commit/6a0f39b252a81fa4b19dc56dc889183acc9225ae","tags":["x_refsource_MISC"],"url":"https://github.com/go-vikunja/vikunja/commit/6a0f39b252a81fa4b19dc56dc889183acc9225ae"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4b30d96dfeaa2504e743b87f433aa4cda9e159bccf7cbc974d94c8036594a3e8 · sha256:24e65767b144f73c… · /containers/cna/references/2

{"name":"https://github.com/go-vikunja/vikunja/pull/2584","tags":["x_refsource_MISC"],"url":"https://github.com/go-vikunja/vikunja/pull/2584"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4b30d96dfeaa2504e743b87f433aa4cda9e159bccf7cbc974d94c8036594a3e8 · sha256:24e65767b144f73c… · /containers/cna/references/1

{"name":"https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0","tags":["x_refsource_MISC"],"url":"https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4b30d96dfeaa2504e743b87f433aa4cda9e159bccf7cbc974d94c8036594a3e8 · sha256:24e65767b144f73c… · /containers/cna/references/3

{"name":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v479-vf79-mg83","tags":["x_refsource_CONFIRM"],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v479-vf79-mg83"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4b30d96dfeaa2504e743b87f433aa4cda9e159bccf7cbc974d94c8036594a3e8 · sha256:24e65767b144f73c… · /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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