{"id":"CVE-2026-57449","title":"Actual is a local-first personal finance tool","summary":"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_TO…","severity":"high","cvss":7.1,"cvssVector":"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","cwe":["CWE-200","CWE-284","CWE-863"],"vendor":"actualbudget","product":"actual","affected":["actual < 26.7.0"],"published":"2026-09-25","updated":"2026-09-28","sourceUpdated":"2026-09-28T14:17:16.140","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-57449","references":[{"url":"https://github.com/actualbudget/actual/security/advisories/GHSA-m62c-5q34-f3cf","label":"security-advisories@github.com"},{"url":"https://github.com/actualbudget/actual/security/advisories/GHSA-m62c-5q34-f3cf","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57449"},{"url":"https://github.com/advisories/GHSA-m62c-5q34-f3cf"}],"tags":["nvd","cve.org","exploit-available","ghsa","npm"],"epss":0.00258,"epssPercentile":0.17347,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-28T13:07:03.977402Z"},"cvssSource":"cna","ingestedAt":"2026-09-25T23:21:16.955Z","aliases":["GHSA-m62c-5q34-f3cf"],"ecosystem":"npm","patched":["@actual-app/sync-server 26.7.0"],"slug":"CVE-2026-57449","body":"## Overview\n\nActual 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-57449)\n\nAffected packages:\n\n- `@actual-app/sync-server <= 26.6.0`\n\nPatched in:\n\n- `@actual-app/sync-server 26.7.0`\n\nSource: https://github.com/advisories/GHSA-m62c-5q34-f3cf","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":211958,"id":"CVE-2026-57449","ts":1790604802866,"field":"exploit_available","old":"false","new":"true"}]}