Technology · Aio-Libs
Aio-Libs Aiohttp vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 11 vulnerabilities in Aio-Libs Aiohttp: 1 in the last 7 days and 9 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 from none in the four before.
- Last 7 days
- 1
- Last 90 days
- 9
- Critical, all time
- 1
- Exploited in the wild
- 0
About Aio-Libs Aiohttp
Python asynchronous HTTP client/server library for web applications.
Latest Aio-Libs Aiohttp vulnerabilities
- CVE-2026-123817: AIOHTTP WebSocket memory exhaustion via fragmented framesinfoEPSS 0.3%
- CVE-2026-111750: aiohttp HTTP request smuggling in pure Python parsermediumCVSS 4EPSS 0.3%
- CVE-2026-111749: aiohttp host-only cookie scope bypass in subdomain handlingmediumCVSS 4EPSS 0.3%
- CVE-2026-111748: aiohttp Request scheme manipulation in absolute-form requestsmediumCVSS 4EPSS 0.4%
- CVE-2026-111066: AIOHTTP multipart request file descriptor exhaustionhighCVSS 4EPSS 0.4%
- CVE-2026-111065: aiohttp cookie Max-Age integer overflow causes connection pool exhaustionmediumCVSS 4EPSS 0.4%
- CVE-2026-111064: aiohttp keepalive timeout enforcement bypasshighCVSS 4EPSS 0.4%
- CVE-2026-111063: AIOHTTP secure cookie enforcement bypasslowEPSS 0.2%
- aiohttp resource exhaustion via unbounded memory/CPU usehighCVSS 4
- CVE-2026-34520: aio-libs aiohttp header injection in llhttp C parsercriticalCVSS 9.1EPSS 0.5%
- CVE-2026-34514: aiohttp CRLF injection in multipart content type headermediumCVSS 5.3EPSS 0.3%
Most severe Aio-Libs Aiohttp vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-34520: aio-libs aiohttp header injection in llhttp C parsercriticalCVSS 9.1EPSS 0.5%
- CVE-2026-111064: aiohttp keepalive timeout enforcement bypasshighCVSS 4EPSS 0.4%
- CVE-2026-111066: AIOHTTP multipart request file descriptor exhaustionhighCVSS 4EPSS 0.4%
- aiohttp resource exhaustion via unbounded memory/CPU usehighCVSS 4
- CVE-2026-34514: aiohttp CRLF injection in multipart content type headermediumCVSS 5.3EPSS 0.3%
- CVE-2026-111748: aiohttp Request scheme manipulation in absolute-form requestsmediumCVSS 4EPSS 0.4%
- CVE-2026-111065: aiohttp cookie Max-Age integer overflow causes connection pool exhaustionmediumCVSS 4EPSS 0.4%
- CVE-2026-111750: aiohttp HTTP request smuggling in pure Python parsermediumCVSS 4EPSS 0.3%
- CVE-2026-111749: aiohttp host-only cookie scope bypass in subdomain handlingmediumCVSS 4EPSS 0.3%
- CVE-2026-111063: AIOHTTP secure cookie enforcement bypasslowEPSS 0.2%
Vulnerabilities per week
8 vulnerabilities in the last four weeks, up from none in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 8 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 1 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Aio-Libs Aiohttp vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/aio-libs-aiohttp)<a href="https://junglewise.ai/threats/technologies/aio-libs-aiohttp"><img src="https://junglewise.ai/threats/technologies/aio-libs-aiohttp/badge.svg" alt="Aio-Libs Aiohttp vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/aio-libs-aiohttp.json, and this page as text at https://junglewise.ai/threats/technologies/aio-libs-aiohttp.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Aio-Libs Aiohttp vulnerabilities", https://junglewise.ai/threats/technologies/aio-libs-aiohttp, 12 November 2026.