# Aio-Libs vulnerabilities Source: https://junglewise.ai/threats/vendors/aio-libs Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/vendors/aio-libs.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 29 vulnerabilities in Aio-Libs: 1 in the last 7 days and 10 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-123817, was published on 9 November 2026. 8 vulnerabilities in the last four weeks, up 700% on the four before (1). 1 technology has a page of its own. ## Counts - Last 7 days: 1 - Last 30 days: 9 - Last 90 days: 10 - All time: 29 (1 critical, 0 exploited in the wild) ## About Aio-Libs Organization that develops asynchronous I/O libraries for Python. ## Latest Aio-Libs vulnerabilities - [CVE-2026-123817: AIOHTTP WebSocket memory exhaustion via fragmented frames](https://junglewise.ai/threats/cve-2026-123817-aiohttp-is-an-asynchronous-http-client-server-framework-for) (info, published 9 Nov 2026) - [CVE-2026-111750: aiohttp HTTP request smuggling in pure Python parser](https://junglewise.ai/threats/cve-2026-111750-aiohttp-is-an-asynchronous-http-client-server-framework-for) (medium, CVSS 4, published 19 Oct 2026) - [CVE-2026-111749: aiohttp host-only cookie scope bypass in subdomain handling](https://junglewise.ai/threats/cve-2026-111749-aiohttp-is-an-asynchronous-http-client-server-framework-for) (medium, CVSS 4, published 19 Oct 2026) - [CVE-2026-111748: aiohttp Request scheme manipulation in absolute-form requests](https://junglewise.ai/threats/cve-2026-111748-aiohttp-is-an-asynchronous-http-client-server-framework-for) (medium, CVSS 4, published 19 Oct 2026) - [CVE-2026-111066: AIOHTTP multipart request file descriptor exhaustion](https://junglewise.ai/threats/cve-2026-111066-aiohttp-is-an-asynchronous-http-client-server-framework-for) (high, CVSS 4, published 19 Oct 2026) - [CVE-2026-111065: aiohttp cookie Max-Age integer overflow causes connection pool exhaustion](https://junglewise.ai/threats/cve-2026-111065-aiohttp-is-an-asynchronous-http-client-server-framework-for) (medium, CVSS 4, published 19 Oct 2026) - [CVE-2026-111064: aiohttp keepalive timeout enforcement bypass](https://junglewise.ai/threats/cve-2026-111064-aiohttp-is-an-asynchronous-http-client-server-framework-for) (high, CVSS 4, published 19 Oct 2026) - [CVE-2026-111063: AIOHTTP secure cookie enforcement bypass](https://junglewise.ai/threats/cve-2026-111063-aiohttp-is-an-asynchronous-http-client-server-framework-for) (low, published 19 Oct 2026) - [aiohttp resource exhaustion via unbounded memory/CPU use](https://junglewise.ai/threats/aiohttp-multiple-instances-of-excessive-or-unbounded-memory-cpu-use-a4cd3374) (high, CVSS 4, published 19 Oct 2026) - [CVE-2026-104874: multidict reference leak in items-view union and subtraction](https://junglewise.ai/threats/cve-2026-104874-multidict-is-an-implementation-of-a-multidict-data-structure) (medium, CVSS 5.3, published 2 Oct 2026) - [CVE-2026-69244: AIOHTTP out-of-bounds heap read in C HTTP response parser](https://junglewise.ai/threats/cve-2026-69244-aiohttp-out-of-bounds-heap-read-in-c-http-response-parser) (high, CVSS 4, published 3 Aug 2026) - [CVE-2026-69243: AIOHTTP request smuggling in WebSocket upgrade](https://junglewise.ai/threats/cve-2026-69243-aiohttp-request-smuggling-in-websocket-upgrade) (medium, CVSS 4, published 3 Aug 2026) - [CVE-2026-59881: aio-libs aiohttp resource exhaustion in WebSocket client decompression](https://junglewise.ai/threats/cve-2026-59881-aio-libs-aiohttp-resource-exhaustion-in-websocket-client) (medium, CVSS 4, published 30 Jul 2026) - [CVE-2024-52303: PYSEC-2026-1096 - aiohttp has a memory leak when middleware is enabled when requesting a resource with a non-allowed method](https://junglewise.ai/threats/cve-2024-52303-aiohttp-memory-leak-in-middleware-with-non-allowed-http-methods) (low, CVSS 3.1, published 7 Jul 2026) - [CVE-2026-54280: AIOHTTP improper resource shutdown in payload handling](https://junglewise.ai/threats/cve-2026-54280-aiohttp-improper-resource-shutdown-in-payload-handling) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-54279: aio-libs aiohttp host-only cookie scope loss in CookieJar](https://junglewise.ai/threats/cve-2026-54279-aio-libs-aiohttp-host-only-cookie-scope-loss-in-cookiejar) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-54278: aio-libs aiohttp Denial of Service via compressed request body decompression](https://junglewise.ai/threats/cve-2026-54278-aio-libs-aiohttp-denial-of-service-via-compressed-request-body) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-54277: aio-libs aiohttp denial of service via max_line_size bypass in C parser](https://junglewise.ai/threats/cve-2026-54277-aio-libs-aiohttp-denial-of-service-via-max-line-size-bypass-in-c) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-54276: AIOHTTP information exposure in DigestAuthMiddleware cross-origin redirects](https://junglewise.ai/threats/cve-2026-54276-aiohttp-information-exposure-in-digestauthmiddleware-cross-origin) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-54275: aio-libs aiohttp TLS SNI check bypass during connection reuse](https://junglewise.ai/threats/cve-2026-54275-aio-libs-aiohttp-tls-sni-check-bypass-during-connection-reuse) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-54274: aio-libs aiohttp memory exhaustion in WebSocket handler](https://junglewise.ai/threats/cve-2026-54274-aio-libs-aiohttp-memory-exhaustion-in-websocket-handler) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-54273: aio-libs aiohttp Denial of Service via unbounded request pipelining](https://junglewise.ai/threats/cve-2026-54273-aio-libs-aiohttp-denial-of-service-via-unbounded-request) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-50269: aio-libs aiohttp CRLF injection in multipart headers](https://junglewise.ai/threats/cve-2026-50269-aio-libs-aiohttp-crlf-injection-in-multipart-headers) (medium, CVSS 4, published 22 Jun 2026) - [CVE-2026-47265: AIOHTTP sensitive cookie leak during cross-origin redirect](https://junglewise.ai/threats/cve-2026-47265-aiohttp-sensitive-cookie-leak-during-cross-origin-redirect) (medium, CVSS 4, published 2 Jun 2026) - [CVE-2026-34993: aio-libs aiohttp code execution via deserialization in CookieJar.load](https://junglewise.ai/threats/cve-2026-34993-aio-libs-aiohttp-code-execution-via-deserialization-in-cookiejar) (medium, CVSS 6.4, published 2 Jun 2026) ## Most severe Aio-Libs vulnerabilities - [CVE-2026-34520: aio-libs aiohttp header injection in llhttp C parser](https://junglewise.ai/threats/cve-2026-34520-aio-libs-aiohttp-header-injection-in-llhttp-c-parser) (critical, CVSS 9.1, published 1 Apr 2026) - [CVE-2025-69223: aio-libs aiohttp denial of service via zip bomb in HTTP parser](https://junglewise.ai/threats/cve-2025-69223-aio-libs-aiohttp-denial-of-service-via-zip-bomb-in-http-parser) (high, CVSS 7.5, published 5 Jan 2026) - [CVE-2026-69244: AIOHTTP out-of-bounds heap read in C HTTP response parser](https://junglewise.ai/threats/cve-2026-69244-aiohttp-out-of-bounds-heap-read-in-c-http-response-parser) (high, CVSS 4, published 3 Aug 2026) - [CVE-2026-111064: aiohttp keepalive timeout enforcement bypass](https://junglewise.ai/threats/cve-2026-111064-aiohttp-is-an-asynchronous-http-client-server-framework-for) (high, CVSS 4, published 19 Oct 2026) - [CVE-2026-111066: AIOHTTP multipart request file descriptor exhaustion](https://junglewise.ai/threats/cve-2026-111066-aiohttp-is-an-asynchronous-http-client-server-framework-for) (high, CVSS 4, published 19 Oct 2026) - [aiohttp resource exhaustion via unbounded memory/CPU use](https://junglewise.ai/threats/aiohttp-multiple-instances-of-excessive-or-unbounded-memory-cpu-use-a4cd3374) (high, CVSS 4, published 19 Oct 2026) - [CVE-2026-34993: aio-libs aiohttp code execution via deserialization in CookieJar.load](https://junglewise.ai/threats/cve-2026-34993-aio-libs-aiohttp-code-execution-via-deserialization-in-cookiejar) (medium, CVSS 6.4, published 2 Jun 2026) - [CVE-2025-69230: aiohttp logging storm in cookie parsing](https://junglewise.ai/threats/cve-2025-69230-aiohttp-logging-storm-in-cookie-parsing) (medium, CVSS 5.3, published 6 Jan 2026) - [CVE-2026-34514: aiohttp CRLF injection in multipart content type header](https://junglewise.ai/threats/cve-2026-34514-aiohttp-crlf-injection-in-multipart-content-type-header) (medium, CVSS 5.3, published 1 Apr 2026) - [CVE-2026-104874: multidict reference leak in items-view union and subtraction](https://junglewise.ai/threats/cve-2026-104874-multidict-is-an-implementation-of-a-multidict-data-structure) (medium, CVSS 5.3, published 2 Oct 2026) ## Vulnerabilities per week 8 vulnerabilities in the last four weeks, up 700% on the four before (1). | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 1 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 8 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 1 | 0 | 0 | ## Aio-Libs technologies - [Aio-Libs Aiohttp](https://junglewise.ai/threats/technologies/aio-libs-aiohttp): 11 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Aio-Libs vulnerabilities", https://junglewise.ai/threats/vendors/aio-libs, 13 November 2026.