AIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sections

SummaryThe Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. ImpactIf a pure Python version of aiohttp is installed i.e. without the usual C extensions or AIOHTTPNOEXTENSIONS is enabled, then an attacker may be able to execute...

muffin (0.5.0) potentially affected by CVE-2025-53643 via aiohttp (0.20.0)

aiohttp PYPI version 0.20.0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - muffin 0.5.0 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

muffin (>=0.1.1, <=0.1.4) potentially affected by CVE-2025-53643 via aiohttp (0.17.2)

aiohttp PYPI version 0.17.2 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - muffin =0.1.1, =0.1.4 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

muffin (>=0.0.105, <=0.0.106) potentially affected by CVE-2025-53643 via aiohttp (0.17.0)

aiohttp PYPI version 0.17.0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - muffin =0.0.105, =0.0.106 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

muffin (>=0.0.46, <=0.0.52) potentially affected by CVE-2025-53643 via aiohttp (0.15.0)

aiohttp PYPI version 0.15.0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - muffin =0.0.46, =0.0.52 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

interest (0.0.1) potentially affected by CVE-2025-53643 via aiohttp (0.14.0)

aiohttp PYPI version 0.14.0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - interest 0.0.1 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

iamine (>=0.1.5, <=0.1.6) potentially affected by CVE-2025-53643 via aiohttp (0.13.1)

aiohttp PYPI version 0.13.1 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - iamine =0.1.5, =0.1.6 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

pyatv (>=0.1.2, <=0.1.3) potentially affected by CVE-2025-53643 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-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

aioservice (0.0.1), devtools-proxy (0.0.4) +4 more potentially affected by CVE-2025-53643 via aiohttp (1.1.5)

aiohttp PYPI version 1.1.5 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - aioservice 0.0.1 - devtools-proxy 0.0.4 - fastcli 0.1.0 - goblin 1.0.0b2 - metadoc =0.9.1, =0.10.5 - python-functionsclient 0.0.1 Source cves:...

aiopixiv (>=1.0.0, <=1.0.4) potentially affected by CVE-2025-53643 via aiohttp (1.1.0)

aiohttp PYPI version 1.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - aiopixiv =1.0.0, =1.0.4 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

aio-tinder (>=0.1.7, <=0.1.8) potentially affected by CVE-2025-53643 via aiohttp (1.0.1)

aiohttp PYPI version 1.0.1 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - aio-tinder =0.1.7, =0.1.8 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

muffin (>=0.7.1, <=0.8.6) potentially affected by CVE-2025-53643 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-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

aiopogo (>=2.0.1, <=2.1.0b0), aiosparql (>=0.0.0, <=0.10.0a3) +6 more potentially affected by CVE-2025-53643 via aiohttp (2.1.0)

aiohttp PYPI version 2.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - aiopogo =2.0.1, =0.0.0, =0.46.0, =0.4.0, =0.0.2, =0.4.4 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

duniterpy (0.40.8), jenkins-epo (>=1.159.0, <=1.160.0) potentially affected by CVE-2025-53643 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-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

aiobotocore (0.2.3), aiobotocore-botorange (>=0.1.0, <=0.2.3a0) +9 more potentially affected by CVE-2025-53643 via aiohttp (1.3.5)

aiohttp PYPI version 1.3.5 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - aiobotocore 0.2.3 - aiobotocore-botorange =0.1.0, =0.0.3a0, =1.2.0, =1.0.0, =3.0.2, =3.0.5 Source cves: CVE-2025-53643 Source advisory:...

opentrons (>=3.7.0, <=3.11.4) potentially affected by CVE-2025-53643 via aiohttp (2.3.8)

aiohttp PYPI version 2.3.8 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - opentrons =3.7.0, =3.11.4 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

hassmart-homeassistant (0.60.0), homeassistant (>=0.60.0, <=0.60.1) +2 more potentially affected by CVE-2025-53643 via aiohttp (2.3.6)

aiohttp PYPI version 2.3.6 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - hassmart-homeassistant 0.60.0 - homeassistant =0.60.0, =0.60.1 - pyplanet 0.5.4 - reliz 0.1.0.dev0 Source cves: CVE-2025-53643 Source advisory:...

homeassistant (>=0.58.0, <=0.58.1), pyplanet (>=0.5.0, <=0.5.2) +1 more potentially affected by CVE-2025-53643 via aiohttp (2.3.2)

aiohttp PYPI version 2.3.2 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - homeassistant =0.58.0, =0.5.0, =0.6.0, =0.6.2 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

appdaemon (>=3.0.0b2, <=3.0.0b3), balebot (>=1.2.3, <=1.8.15) +4 more potentially affected by CVE-2025-53643 via aiohttp (2.3.7)

aiohttp PYPI version 2.3.7 is affected by a known vulnerability. The following packages have a transitive dependency on aiohttp and may be impacted: - appdaemon =3.0.0b2, =1.2.3, =0.61.1, =0.0.1, =0.2.1 - tictax 0.1.3 Source cves: CVE-2025-53643 Source advisory: OSV:PYSEC-2026-1104...

pushpull (0.0.2) potentially affected by CVE-2025-53643 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-2025-53643 Source advisory: OSV:PYSEC-2026-1104...