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CVE-2026-35601

Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the CalDAV output generator builds iCalendar VTODO entries via raw string concatenation without applying RFC 5545 TEXT value escaping. User-controlled task titles containing CRLF characters break the iCalendar property boundary, allowing injection of arbitrary iCalendar properties such as ATTACH, VALARM, or ORGANIZER. This vulnerability is fixed in 2.3.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:561f544be7a8c099b6c5a3d0c5f907f5570a5de17bc3de6a20eccdecd1770dd8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

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:v2:154f90ca8209ab112e720b1491028f774f31b8889fa8f831ed001b45be3b6453 · sha256:c7d8d7e7119af598… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.1,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:154f90ca8209ab112e720b1491028f774f31b8889fa8f831ed001b45be3b6453 · sha256:c7d8d7e7119af598… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-93","description":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:154f90ca8209ab112e720b1491028f774f31b8889fa8f831ed001b45be3b6453 · sha256:c7d8d7e7119af598… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/go-vikunja/vikunja/pull/2580","tags":["x_refsource_MISC"],"url":"https://github.com/go-vikunja/vikunja/pull/2580"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:154f90ca8209ab112e720b1491028f774f31b8889fa8f831ed001b45be3b6453 · sha256:c7d8d7e7119af598… · /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:v2:154f90ca8209ab112e720b1491028f774f31b8889fa8f831ed001b45be3b6453 · sha256:c7d8d7e7119af598… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:154f90ca8209ab112e720b1491028f774f31b8889fa8f831ed001b45be3b6453 · sha256:c7d8d7e7119af598… · /containers/adp/0/references/0
{"name":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-2g7h-7rqr-9p4r"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:154f90ca8209ab112e720b1491028f774f31b8889fa8f831ed001b45be3b6453 · sha256:c7d8d7e7119af598… · /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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