{"schema_version":1,"title":"Aiohttp vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 16 vulnerabilities in Aiohttp: 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-34525, was published on 1 April 2026.","url":"https://junglewise.ai/threats/technologies/aiohttp-aiohttp","json_url":"https://junglewise.ai/threats/technologies/aiohttp-aiohttp.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/aiohttp-aiohttp","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":true,"counts":{"high":6,"all_time":16,"critical":1,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":16},"latest":[{"cve":"CVE-2026-34525","cvss":5.3,"epss":0.0029,"slug":"cve-2026-34525-aiohttp-accepts-duplicate-host-headers","title":"AIOHTTP accepts duplicate Host headers","severity":"medium","exploited":false,"published_at":"2026-04-01T21:17:00.49+00:00","url":"https://junglewise.ai/threats/cve-2026-34525-aiohttp-accepts-duplicate-host-headers"},{"cve":"CVE-2026-34520","cvss":9.1,"epss":0.0046,"slug":"cve-2026-34520-aio-libs-aiohttp-header-injection-in-llhttp-c-parser","title":"aio-libs aiohttp header injection in llhttp C parser","severity":"critical","exploited":false,"published_at":"2026-04-01T21:17:00.333+00:00","url":"https://junglewise.ai/threats/cve-2026-34520-aio-libs-aiohttp-header-injection-in-llhttp-c-parser"},{"cve":"CVE-2026-34519","cvss":5.3,"epss":0.0029,"slug":"cve-2026-34519-aiohttp-has-http-response-splitting-via-r-in-reason-phrase","title":"AIOHTTP has HTTP response splitting via \\r in reason phrase","severity":"medium","exploited":false,"published_at":"2026-04-01T21:17:00.17+00:00","url":"https://junglewise.ai/threats/cve-2026-34519-aiohttp-has-http-response-splitting-via-r-in-reason-phrase"},{"cve":"CVE-2026-34518","cvss":5.3,"epss":0.0034,"slug":"cve-2026-34518-aiohttp-leaks-cookie-and-proxy-authorization-headers-on-cross","title":"AIOHTTP leaks Cookie and Proxy-Authorization headers on cross-origin redirect","severity":"medium","exploited":false,"published_at":"2026-04-01T21:17:00.02+00:00","url":"https://junglewise.ai/threats/cve-2026-34518-aiohttp-leaks-cookie-and-proxy-authorization-headers-on-cross"},{"cve":"CVE-2026-34517","cvss":5.3,"epss":0.0038,"slug":"cve-2026-34517-aiohttp-has-late-size-enforcement-for-non-file-multipart-fields","title":"AIOHTTP has late size enforcement for non-file multipart fields causes memory DoS","severity":"medium","exploited":false,"published_at":"2026-04-01T21:16:59.87+00:00","url":"https://junglewise.ai/threats/cve-2026-34517-aiohttp-has-late-size-enforcement-for-non-file-multipart-fields"},{"cve":"CVE-2026-34516","cvss":7.5,"epss":0.0044,"slug":"cve-2026-34516-aiohttp-has-a-multipart-header-size-bypass","title":"AIOHTTP has a Multipart Header Size Bypass","severity":"high","exploited":false,"published_at":"2026-04-01T21:16:59.723+00:00","url":"https://junglewise.ai/threats/cve-2026-34516-aiohttp-has-a-multipart-header-size-bypass"},{"cve":"CVE-2026-34515","cvss":7.5,"epss":0.0043,"slug":"cve-2026-34515-aiohttp-affected-by-unc-ssrf-ntlmv2-credential-theft-local-file","title":"AIOHTTP affected by UNC SSRF/NTLMv2 Credential Theft/Local File Read in static resource handler on Windows","severity":"high","exploited":false,"published_at":"2026-04-01T21:16:59.57+00:00","url":"https://junglewise.ai/threats/cve-2026-34515-aiohttp-affected-by-unc-ssrf-ntlmv2-credential-theft-local-file"},{"cve":"CVE-2026-34514","cvss":5.3,"epss":0.0032,"slug":"cve-2026-34514-aiohttp-crlf-injection-in-multipart-content-type-header","title":"aiohttp CRLF injection in multipart content type header","severity":"medium","exploited":false,"published_at":"2026-04-01T21:16:59.417+00:00","url":"https://junglewise.ai/threats/cve-2026-34514-aiohttp-crlf-injection-in-multipart-content-type-header"},{"cve":"CVE-2026-34513","cvss":7.5,"epss":0.0044,"slug":"cve-2026-34513-aiohttp-affected-by-denial-of-service-dos-via-unbounded-dns-cache","title":"AIOHTTP Affected by Denial of Service (DoS) via Unbounded DNS Cache in TCPConnector","severity":"high","exploited":false,"published_at":"2026-04-01T21:16:59.267+00:00","url":"https://junglewise.ai/threats/cve-2026-34513-aiohttp-affected-by-denial-of-service-dos-via-unbounded-dns-cache"},{"cve":"CVE-2026-22815","cvss":7.5,"epss":0.0044,"slug":"cve-2026-22815-aiohttp-allows-unlimited-trailer-headers-leading-to-possible","title":"aiohttp allows unlimited trailer headers, leading to possible uncapped memory usage","severity":"high","exploited":false,"published_at":"2026-04-01T21:16:58.513+00:00","url":"https://junglewise.ai/threats/cve-2026-22815-aiohttp-allows-unlimited-trailer-headers-leading-to-possible"},{"cve":"CVE-2025-69229","cvss":5.3,"epss":0.004,"slug":"cve-2025-69229-aiohttp-vulnerable-to-dos-through-chunked-messages","title":"PYSEC-2026-1106 - AIOHTTP vulnerable to DoS through chunked messages","severity":"medium","exploited":false,"published_at":"2026-01-06T00:15:48.347+00:00","url":"https://junglewise.ai/threats/cve-2025-69229-aiohttp-vulnerable-to-dos-through-chunked-messages"},{"cve":"CVE-2025-69228","cvss":7.5,"epss":0.004,"slug":"cve-2025-69228-aiohttp-vulnerable-to-denial-of-service-through-large-payloads","title":"PYSEC-2026-1100 - AIOHTTP vulnerable to denial of service through large payloads","severity":"high","exploited":false,"published_at":"2026-01-06T00:15:48.203+00:00","url":"https://junglewise.ai/threats/cve-2025-69228-aiohttp-vulnerable-to-denial-of-service-through-large-payloads"},{"cve":"CVE-2025-69227","cvss":7.5,"epss":0.0039,"slug":"cve-2025-69227-aiohttp-vulnerable-to-dos-when-bypassing-asserts","title":"PYSEC-2026-1107 - AIOHTTP vulnerable to DoS when bypassing asserts","severity":"high","exploited":false,"published_at":"2026-01-06T00:15:48.053+00:00","url":"https://junglewise.ai/threats/cve-2025-69227-aiohttp-vulnerable-to-dos-when-bypassing-asserts"},{"cve":"CVE-2025-69225","cvss":5.3,"epss":0.0028,"slug":"cve-2025-69225-aiohttp-has-unicode-match-groups-in-regexes-for-ascii-protocol","title":"PYSEC-2026-1109 - AIOHTTP has unicode match groups in regexes for ASCII protocol elements","severity":"medium","exploited":false,"published_at":"2026-01-06T00:15:47.87+00:00","url":"https://junglewise.ai/threats/cve-2025-69225-aiohttp-has-unicode-match-groups-in-regexes-for-ascii-protocol"},{"cve":"CVE-2025-69226","cvss":5.3,"epss":0.0036,"slug":"cve-2025-69226-aiohttp-vulnerable-to-brute-force-leak-of-internal-static-le-path","title":"PYSEC-2026-1097 - AIOHTTP vulnerable to brute-force leak of internal static file path components","severity":"medium","exploited":false,"published_at":"2026-01-05T23:15:40.913+00:00","url":"https://junglewise.ai/threats/cve-2025-69226-aiohttp-vulnerable-to-brute-force-leak-of-internal-static-le-path"},{"cve":"CVE-2025-69224","cvss":6.5,"epss":0.0024,"slug":"cve-2025-69224-aiohttp-s-unicode-processing-of-header-values-could-cause-parsing","title":"PYSEC-2026-1099 - AIOHTTP's unicode processing of header values could cause parsing discrepancies","severity":"medium","exploited":false,"published_at":"2026-01-05T23:15:40.697+00:00","url":"https://junglewise.ai/threats/cve-2025-69224-aiohttp-s-unicode-processing-of-header-values-could-cause-parsing"}],"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"Aiohttp","slug":"aiohttp-aiohttp","vendor":{"hub":true,"name":"Aiohttp","slug":"aiohttp","url":"https://junglewise.ai/threats/vendors/aiohttp"},"aliases":[],"repo_url":"https://github.com/aio-libs/aiohttp","description":"Python asynchronous HTTP client and server library.","url":"https://junglewise.ai/threats/technologies/aiohttp-aiohttp"},"most_severe":[{"cve":"CVE-2026-34520","cvss":9.1,"epss":0.0046,"slug":"cve-2026-34520-aio-libs-aiohttp-header-injection-in-llhttp-c-parser","title":"aio-libs aiohttp header injection in llhttp C parser","severity":"critical","exploited":false,"published_at":"2026-04-01T21:17:00.333+00:00","url":"https://junglewise.ai/threats/cve-2026-34520-aio-libs-aiohttp-header-injection-in-llhttp-c-parser"},{"cve":"CVE-2026-34516","cvss":7.5,"epss":0.0044,"slug":"cve-2026-34516-aiohttp-has-a-multipart-header-size-bypass","title":"AIOHTTP has a Multipart Header Size Bypass","severity":"high","exploited":false,"published_at":"2026-04-01T21:16:59.723+00:00","url":"https://junglewise.ai/threats/cve-2026-34516-aiohttp-has-a-multipart-header-size-bypass"},{"cve":"CVE-2026-34513","cvss":7.5,"epss":0.0044,"slug":"cve-2026-34513-aiohttp-affected-by-denial-of-service-dos-via-unbounded-dns-cache","title":"AIOHTTP Affected by Denial of Service (DoS) via Unbounded DNS Cache in TCPConnector","severity":"high","exploited":false,"published_at":"2026-04-01T21:16:59.267+00:00","url":"https://junglewise.ai/threats/cve-2026-34513-aiohttp-affected-by-denial-of-service-dos-via-unbounded-dns-cache"},{"cve":"CVE-2026-22815","cvss":7.5,"epss":0.0044,"slug":"cve-2026-22815-aiohttp-allows-unlimited-trailer-headers-leading-to-possible","title":"aiohttp allows unlimited trailer headers, leading to possible uncapped memory usage","severity":"high","exploited":false,"published_at":"2026-04-01T21:16:58.513+00:00","url":"https://junglewise.ai/threats/cve-2026-22815-aiohttp-allows-unlimited-trailer-headers-leading-to-possible"},{"cve":"CVE-2026-34515","cvss":7.5,"epss":0.0043,"slug":"cve-2026-34515-aiohttp-affected-by-unc-ssrf-ntlmv2-credential-theft-local-file","title":"AIOHTTP affected by UNC SSRF/NTLMv2 Credential Theft/Local File Read in static resource handler on Windows","severity":"high","exploited":false,"published_at":"2026-04-01T21:16:59.57+00:00","url":"https://junglewise.ai/threats/cve-2026-34515-aiohttp-affected-by-unc-ssrf-ntlmv2-credential-theft-local-file"},{"cve":"CVE-2025-69228","cvss":7.5,"epss":0.004,"slug":"cve-2025-69228-aiohttp-vulnerable-to-denial-of-service-through-large-payloads","title":"PYSEC-2026-1100 - AIOHTTP vulnerable to denial of service through large payloads","severity":"high","exploited":false,"published_at":"2026-01-06T00:15:48.203+00:00","url":"https://junglewise.ai/threats/cve-2025-69228-aiohttp-vulnerable-to-denial-of-service-through-large-payloads"},{"cve":"CVE-2025-69227","cvss":7.5,"epss":0.0039,"slug":"cve-2025-69227-aiohttp-vulnerable-to-dos-when-bypassing-asserts","title":"PYSEC-2026-1107 - AIOHTTP vulnerable to DoS when bypassing asserts","severity":"high","exploited":false,"published_at":"2026-01-06T00:15:48.053+00:00","url":"https://junglewise.ai/threats/cve-2025-69227-aiohttp-vulnerable-to-dos-when-bypassing-asserts"},{"cve":"CVE-2025-69224","cvss":6.5,"epss":0.0024,"slug":"cve-2025-69224-aiohttp-s-unicode-processing-of-header-values-could-cause-parsing","title":"PYSEC-2026-1099 - AIOHTTP's unicode processing of header values could cause parsing discrepancies","severity":"medium","exploited":false,"published_at":"2026-01-05T23:15:40.697+00:00","url":"https://junglewise.ai/threats/cve-2025-69224-aiohttp-s-unicode-processing-of-header-values-could-cause-parsing"},{"cve":"CVE-2025-69229","cvss":5.3,"epss":0.004,"slug":"cve-2025-69229-aiohttp-vulnerable-to-dos-through-chunked-messages","title":"PYSEC-2026-1106 - AIOHTTP vulnerable to DoS through chunked messages","severity":"medium","exploited":false,"published_at":"2026-01-06T00:15:48.347+00:00","url":"https://junglewise.ai/threats/cve-2025-69229-aiohttp-vulnerable-to-dos-through-chunked-messages"},{"cve":"CVE-2026-34517","cvss":5.3,"epss":0.0038,"slug":"cve-2026-34517-aiohttp-has-late-size-enforcement-for-non-file-multipart-fields","title":"AIOHTTP has late size enforcement for non-file multipart fields causes memory DoS","severity":"medium","exploited":false,"published_at":"2026-04-01T21:16:59.87+00:00","url":"https://junglewise.ai/threats/cve-2026-34517-aiohttp-has-late-size-enforcement-for-non-file-multipart-fields"}],"generated_at":"2026-11-09T03:07:00.176479+00:00"}