{"cve":"CVE-2026-54276","nvd":{"published":"2026-06-22T18:16:46.133","modified":"2026-10-25T23:10:00.167","status":"Analyzed","description":"AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, DigestAuthMiddleware can send an authentication response after following a cross-origin redirect. This likely requires an open redirect vulnerability or similar on the target domain for an attacker to be able to execute. Further, the attacker is only receiving the digest, so should only be able to extract the user's credentials if the cryptography is weak or there is some kind of password reuse. This vulnerability is fixed in 3.14.1.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-601","CWE-200","CWE-522"],"references":["https://github.com/aio-libs/aiohttp/commit/38d16060037e1bfcd6d677abababa3c2a4bb58fa","https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hpj7-wq8m-9hgp"],"products":["aiohttp:aiohttp"],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-54276","score":0.00307,"percentile":0.23229,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-hpj7-wq8m-9hgp","url":"https://osv.dev/vulnerability/GHSA-hpj7-wq8m-9hgp","summary":"aiohttp: DigestAuthMiddleware Applies Credentials to Cross-Origin Redirect Challenges","modified":"2026-09-10T03:50:49.899674354Z","packages":[{"ecosystem":"PyPI","name":"aiohttp","purl":"pkg:pypi/aiohttp","ranges":["<3.14.1"],"fixed":["3.14.1"]}]},{"id":"PYSEC-2026-2109","url":"https://osv.dev/vulnerability/PYSEC-2026-2109","summary":"","modified":"2026-07-13T07:15:14.193967551Z","packages":[{"ecosystem":"PyPI","name":"aiohttp","purl":"pkg:pypi/aiohttp","ranges":["<3.14.1"],"fixed":["3.14.1"]}]}],"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."]}