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CVE-2026-27638

Actual is a local-first personal finance tool. Prior to version 26.2.1, in multi-user mode (OpenID), the sync API endpoints (`/sync/*`) don't verify that the authenticated user owns or has access to the file being operated on. Any authenticated user can read, modify, and overwrite any other user's budget files by providing their file ID. Version 26.2.1 patches the issue.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f68d938817a02f57a4063b40dd3bb6cd411262a26cadf45888519073e6e66348
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"actual","vendor":"actualbudget","versions":[{"status":"affected","version":"< 26.2.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2da338e03914b4af9ba1a625b8531d734e89446d423596a374577fce534a1bb6 · sha256:80a6210ff946d434… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.7,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2da338e03914b4af9ba1a625b8531d734e89446d423596a374577fce534a1bb6 · sha256:80a6210ff946d434… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2da338e03914b4af9ba1a625b8531d734e89446d423596a374577fce534a1bb6 · sha256:80a6210ff946d434… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08","tags":["x_refsource_MISC"],"url":"https://github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2da338e03914b4af9ba1a625b8531d734e89446d423596a374577fce534a1bb6 · sha256:80a6210ff946d434… · /containers/cna/references/1
{"name":"https://github.com/actualbudget/actual/releases/tag/v26.2.1","tags":["x_refsource_MISC"],"url":"https://github.com/actualbudget/actual/releases/tag/v26.2.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2da338e03914b4af9ba1a625b8531d734e89446d423596a374577fce534a1bb6 · sha256:80a6210ff946d434… · /containers/cna/references/2
{"name":"https://github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrv"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2da338e03914b4af9ba1a625b8531d734e89446d423596a374577fce534a1bb6 · sha256:80a6210ff946d434… · /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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