echod (0.1.0), muffin (>=0.0.94, <=0.0.97) potentially affected by CVE-2026-34519 via aiohttp (0.16.5)

aiohttp PYPI version 0.16.5 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - echod 0.1.0 - muffin =0.0.94, =0.0.97 Source cves: CVE-2026-34519 Source advisory: OSV:GHSA-MWH4-6H8G-PG8W...

homeassistant (>=0.36.0, <=0.37.1), hypr (0.8.2) +3 more potentially affected by CVE-2026-34519 via aiohttp (1.2.0)

aiohttp PYPI version 1.2.0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - homeassistant =0.36.0, =0.1.0, =0.1.0, =1.5.9, =1.5.12 Source cves: CVE-2026-34519 Source advisory: OSV:GHSA-MWH4-6H8G-PG8W...

EUVD-2026-18044

AIOHTTP has HTTP response splitting via \r in reason phrase...

0x20bf (0.0.1), 2keys (0.5.1) +3261 more potentially affected by CVE-2026-34519 via aiohttp (>=3.0.0b0, <=3.13.3)

aiohttp PYPI version =3.0.0b0, =0.0.1a0, =0.0.15, =0.1.0, =0.5.0a0, =1.0.0, =1.0.0, =0.0.1, =1.0.2, =0.2.1, =0.1.2, =0.1.9 - ab-data-processing 0.0.1 and more Source cves: CVE-2026-34519 Source advisory: SNYK:PYTHON-AIOHTTP-15873731...

HTTP Response Splitting

Overview Affected versions of this package are vulnerable to HTTP Response Splitting via the reason parameter in the HTTP response creation process. An attacker can inject unauthorized headers or manipulate the HTTP response by supplying specially crafted input containing carriage return...

s2aio (>=1.12.0, <=1.14.0) potentially affected by CVE-2026-34519 via aiohttp (0.22.4)

aiohttp PYPI version 0.22.4 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - s2aio =1.12.0, =1.14.0 Source cves: CVE-2026-34519 Source advisory: OSV:GHSA-MWH4-6H8G-PG8W...

polyswarm-api (>=0.1.0, <=0.2.2), polyswarm-client (>=1.0.0rc0, <=1.0.2) +1 more potentially affected by CVE-2026-34519 via aiohttp (2.3.1)

aiohttp PYPI version 2.3.1 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - polyswarm-api =0.1.0, =1.0.0rc0, =0.2.0a7, =0.2.0a10 Source cves: CVE-2026-34519 Source advisory: OSV:GHSA-MWH4-6H8G-PG8W...

homeassistant (>=0.38.0, <=0.38.4), okami (>=0.1.2, <=0.1.3) +1 more potentially affected by CVE-2026-34518 via aiohttp (1.3.1)

aiohttp PYPI version 1.3.1 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - homeassistant =0.38.0, =0.1.2, =0.1.3 - pyatv 0.1.4 Source cves: CVE-2026-34518 Source advisory: OSV:GHSA-966J-VMVW-G2G9...

muffin (>=0.0.98, <=0.0.104) potentially affected by CVE-2026-34518 via aiohttp (0.16.6)

aiohttp PYPI version 0.16.6 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - muffin =0.0.98, =0.0.104 Source cves: CVE-2026-34518 Source advisory: OSV:GHSA-966J-VMVW-G2G9...

devtools-proxy (>=0.0.2, <=0.0.3) potentially affected by CVE-2026-34518 via aiohttp (1.1.4)

aiohttp PYPI version 1.1.4 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - devtools-proxy =0.0.2, =0.0.3 Source cves: CVE-2026-34518 Source advisory: OSV:GHSA-966J-VMVW-G2G9...

pyatv (>=0.1.2, <=0.1.3) potentially affected by CVE-2026-34518 via aiohttp (1.3.0)

aiohttp PYPI version 1.3.0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - pyatv =0.1.2, =0.1.3 Source cves: CVE-2026-34518 Source advisory: OSV:GHSA-966J-VMVW-G2G9...

AIOHTTP leaks Cookie and Proxy-Authorization headers on cross-origin redirect

Summary When following redirects to a different origin, aiohttp drops the Authorization header, but retains the Cookie and Proxy-Authorization headers. Impact The Cookie and Proxy-Authorizations headers could contain sensitive information which may be leaked to an unintended party after following...

GHSA-966J-VMVW-G2G9 AIOHTTP leaks Cookie and Proxy-Authorization headers on cross-origin redirect

Summary When following redirects to a different origin, aiohttp drops the Authorization header, but retains the Cookie and Proxy-Authorization headers. Impact The Cookie and Proxy-Authorizations headers could contain sensitive information which may be leaked to an unintended party after following...

EUVD-2026-18042

AIOHTTP leaks Cookie and Proxy-Authorization headers on cross-origin redirect...

aiourlshortener (>=0.0.1, <=0.0.2) potentially affected by CVE-2026-34518 via aiohttp (2.0.2)

aiohttp PYPI version 2.0.2 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - aiourlshortener =0.0.1, =0.0.2 Source cves: CVE-2026-34518 Source advisory: OSV:GHSA-966J-VMVW-G2G9...

pushpull (0.0.2) potentially affected by CVE-2026-34518 via aiohttp (0.22.0)

aiohttp PYPI version 0.22.0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - pushpull 0.0.2 Source cves: CVE-2026-34518 Source advisory: OSV:GHSA-966J-VMVW-G2G9...

scriptworker (0.2.1) potentially affected by CVE-2026-34518 via aiohttp (0.22.0a0)

aiohttp PYPI version 0.22.0a0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - scriptworker 0.2.1 Source cves: CVE-2026-34518 Source advisory: OSV:GHSA-966J-VMVW-G2G9...

muffin (>=0.7.1, <=0.8.6) potentially affected by CVE-2026-34518 via aiohttp (0.21.6)

aiohttp PYPI version 0.21.6 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - muffin =0.7.1, =0.8.6 Source cves: CVE-2026-34518 Source advisory: OSV:GHSA-966J-VMVW-G2G9...

aioauth-client (>=0.9.2, <=0.9.3), aiohttp-validate (>=0.1.0, <=1.0.0) +10 more potentially affected by CVE-2026-34518 via aiohttp (1.0.5)

aiohttp PYPI version 1.0.5 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - aioauth-client =0.9.2, =0.1.0, =0.0.7, =0.17.0b1, =0.32.0, =1.2.0, =0.10.3, =0.1.8a1, =1.0.0a2, =1.0.0a3 Source cves: CVE-2026-34518 Source...

duniterpy (0.40.8), jenkins-epo (>=1.159.0, <=1.160.0) potentially affected by CVE-2026-34518 via aiohttp (2.0.0rc1)

aiohttp PYPI version 2.0.0rc1 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - duniterpy 0.40.8 - jenkins-epo =1.159.0, =1.160.0 Source cves: CVE-2026-34518 Source advisory: OSV:GHSA-966J-VMVW-G2G9...