{"cve":"CVE-2026-34148","nvd":{"published":"2026-04-06T16:16:34.387","modified":"2026-10-26T22:10:00.163","status":"Analyzed","description":"Fedify is a TypeScript library for building federated server apps powered by ActivityPub. Prior to 1.9.6, 1.10.5, 2.0.8, and 2.1.1, @fedify/fedify follows HTTP redirects recursively in its remote document loader and authenticated document loader without enforcing a maximum redirect count or visited-URL loop detection. An attacker who controls a remote ActivityPub key or actor URL can force a server using Fedify to make repeated outbound requests from a single inbound request, leading to resource consumption and denial of service. This vulnerability is fixed in 1.9.6, 1.10.5, 2.0.8, and 2.1.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400","CWE-770"],"references":["https://github.com/fedify-dev/fedify/releases/tag/1.10.5","https://github.com/fedify-dev/fedify/releases/tag/1.9.6","https://github.com/fedify-dev/fedify/releases/tag/2.0.8","https://github.com/fedify-dev/fedify/releases/tag/2.1.1","https://github.com/fedify-dev/fedify/security/advisories/GHSA-gm9m-gwc4-hwgp"],"products":["fedify:fedify\\/fedify","fedify:fedify\\/vocab-runtime"],"source":"nvd","synced_at":"2026-10-26T22:26:44.656832877+00:00"},"epss":{"cve":"CVE-2026-34148","score":0.00551,"percentile":0.45808,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-gm9m-gwc4-hwgp","url":"https://osv.dev/vulnerability/GHSA-gm9m-gwc4-hwgp","summary":"Fedify affected by resource exhaustion caused by unbounded redirect following during remote key/document resolution","modified":"2026-09-10T03:51:01.811866448Z","packages":[{"ecosystem":"npm","name":"@fedify/fedify","purl":"pkg:npm/%40fedify/fedify","ranges":["<1.9.6"],"fixed":["1.9.6"]},{"ecosystem":"npm","name":"@fedify/vocab-runtime","purl":"pkg:npm/%40fedify/vocab-runtime","ranges":["<2.0.8"],"fixed":["2.0.8"]},{"ecosystem":"npm","name":"@fedify/vocab-runtime","purl":"pkg:npm/%40fedify/vocab-runtime","ranges":[">=2.1.0 <2.1.1"],"fixed":["2.1.1"]},{"ecosystem":"npm","name":"@fedify/fedify","purl":"pkg:npm/%40fedify/fedify","ranges":[">=1.10.0 <1.10.5"],"fixed":["1.10.5"]},{"ecosystem":"npm","name":"@fedify/fedify","purl":"pkg:npm/%40fedify/fedify","ranges":[">=2.0.0 <2.0.8"],"fixed":["2.0.8"]},{"ecosystem":"npm","name":"@fedify/fedify","purl":"pkg:npm/%40fedify/fedify","ranges":[">=2.1.0 <2.1.1"],"fixed":["2.1.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}