{"id":"CVE-2026-57449","revision":"82b9afb911464328a67f60908b5ce32a","records":[{"revision":"82b9afb911464328a67f60908b5ce32a","observedAt":"2026-10-25T14:19:16.843+00:00","statement":{"source":"nvd","id":"CVE-2026-57449","aliases":[],"title":"Actual is a local-first personal finance tool. Prior to 26.7.0, Actual Sync Server's CORS proxy is intended to let authenticated users fetch resources only from repositories listed in the official plugin allowlist. When `ACTUAL_GITHUB_TOKEN…","description":"Actual is a local-first personal finance tool. Prior to 26.7.0, Actual Sync Server's CORS proxy is intended to let authenticated users fetch resources only from repositories listed in the official plugin allowlist. When `ACTUAL_GITHUB_TOKEN` is configured, the proxy automatically attaches the server's GitHub token to GitHub requests. The GitHub API allowlist check uses a raw `startsWith()` prefix test for `/repos/{owner}/{repo}` without requiring a path boundary after the repository name. If an allowlisted public plugin repository is `https://github.com/acme/plugin`, the proxy also accepts GitHub API URLs. Those URLs are outside the allowlisted repository but still pass because their API path starts with `/repos/acme/plugin`. The proxy then forwards the request with the server's `ACTUAL_GITHUB_TOKEN`, allowing any authenticated Actual user to read private GitHub resources reachable by that token. Version 26.7.0 fixes the issue.","state":0,"publishedAt":"2026-09-25T23:16:53.99+00:00","modifiedAt":"2026-09-28T14:17:16.14+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":7.1,"severity":"HIGH"}],"references":["https://github.com/actualbudget/actual/security/advisories/GHSA-m62c-5q34-f3cf"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-57449","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-200","CWE-284","CWE-863"],"productCriteria":[],"sourceDates":{"published":"2026-09-25T23:16:53.990","lastModified":"2026-09-28T14:17:16.140"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-57449","identifiers":["CVE-2026-57449"]},"retained":false,"historicalAffected":[]}],"coverage":[]}