{"cve":"CVE-2026-54273","nvd":{"published":"2026-06-22T18:16:45.743","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, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","score":6.6},"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-770"],"references":["https://github.com/aio-libs/aiohttp/commit/dfdfa9d5aad5d21f91c79fb2ceeba0f8046cb6cf","https://github.com/aio-libs/aiohttp/security/advisories/GHSA-4fvr-rgm6-gqmc"],"products":["aiohttp:aiohttp"],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-54273","score":0.00493,"percentile":0.42066,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4fvr-rgm6-gqmc","url":"https://osv.dev/vulnerability/GHSA-4fvr-rgm6-gqmc","summary":"aiohttp: HTTP/1 Pipelined Requests Queue Without Limit","modified":"2026-09-10T03:51:07.881817751Z","packages":[{"ecosystem":"PyPI","name":"aiohttp","purl":"pkg:pypi/aiohttp","ranges":["<3.14.1"],"fixed":["3.14.1"]}]},{"id":"PYSEC-2026-2107","url":"https://osv.dev/vulnerability/PYSEC-2026-2107","summary":"","modified":"2026-07-13T07:15:15.784194566Z","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."]}