Description
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. The HTTP parser in AIOHTTP has numerous problems with header parsing, which could lead to request smuggling. This parser is only used when AIOHTTP_NO_EXTENSIONS is enabled (or not using a prebuilt wheel). These bugs have been addressed in commit `d5c12ba89` which has been included in release version 3.8.6. Users are advised to upgrade. There are no known workarounds for these issues.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| aio-libs | aiohttp | < 3.8.6 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | python-aiohttp | 3.8.6-1 | — |
| Debian 13 | python-aiohttp | 3.8.6-1 | — |
| Debian 12 | python-aiohttp | 3.8.4-1+deb12u1 | DSA-5828-1 |
| Debian 11 | python-aiohttp | 3.7.4-1+deb11u1 | DLA-4041-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | python-aiohttp | 3.9.1-1ubuntu0.1+esm1 | USN-7642-1 |
| Ubuntu Pro 22.04 LTS | python-aiohttp | 3.8.1-4ubuntu0.2+esm1 | USN-7642-1 |
| Ubuntu Pro 20.04 LTS | python-aiohttp | 3.6.2-1ubuntu1+esm4 | USN-7642-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | python-aiohttp | 3.0.1-1ubuntu0.1~esm5 | USN-7642-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Satellite Utils 6 | foreman +1 | 3.9.1.6-1.el8sat | RHSA-2024:2010 |
| Red Hat Satellite Capsule 6 | foreman +1 | 3.9.1.6-1.el8sat | RHSA-2024:2010 |
| Red Hat Satellite Capsule 6 | puppetserver | 7.14.0-1.el8sat | RHSA-2024:2010 |
| Red Hat Satellite Capsule 6 | python-aiohttp +1 | 3.9.2-0.1.el8pc | RHSA-2024:2010, RHSA-2024:1536 |
| Red Hat Satellite Capsule 6 | python-django +1 | 3.2.22-1.el8pc | RHSA-2024:2010, RHSA-2024:1536 |
| Red Hat Satellite Capsule 6 | python-galaxy-importer +1 | 0.4.18-2.el8pc | RHSA-2024:2010, RHSA-2024:1536 |
| Red Hat Satellite Capsule 6 | python-jinja2 +1 | 3.1.3-0.1.el8pc | RHSA-2024:2010, RHSA-2024:1536 |
| Red Hat Satellite Capsule 6 | python-pycryptodomex +1 | 3.20.0-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite Capsule 6 | python-pygments +1 | 2.17.0-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite Capsule 6 | python3.11-aiohttp | 3.9.2-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite Capsule 6 | python3.11-django | 4.2.9-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite Capsule 6 | python3.11-galaxy-importer | 0.4.19-2.el8pc | RHSA-2024:2010 |
| Red Hat Satellite Capsule 6 | python3.11-jinja2 | 3.1.3-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite Capsule 6 | rubygem-activesupport | 6.1.7.6-1.el8sat | RHSA-2024:2010 |
| Red Hat Satellite 6 | foreman +14 | 3.9.1.6-1.el8sat | RHSA-2024:2010 |
| Red Hat Satellite 6 | puppetserver | 7.14.0-1.el8sat | RHSA-2024:2010 |
| Red Hat Satellite 6 | python-aiohttp +1 | 3.9.2-0.1.el8pc | RHSA-2024:2010, RHSA-2024:1536 |
| Red Hat Satellite 6 | python-django +1 | 3.2.22-1.el8pc | RHSA-2024:2010, RHSA-2024:1536 |
| Red Hat Satellite 6 | python-galaxy-importer +1 | 0.4.18-2.el8pc | RHSA-2024:2010, RHSA-2024:1536 |
| Red Hat Satellite 6 | python-jinja2 +1 | 3.1.3-0.1.el8pc | RHSA-2024:2010, RHSA-2024:1536 |
| Red Hat Satellite 6 | python-pycryptodomex +1 | 3.20.0-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite 6 | python-pygments +1 | 2.17.0-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite 6 | python3.11-aiohttp | 3.9.2-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite 6 | python3.11-django | 4.2.9-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite 6 | python3.11-galaxy-importer | 0.4.19-2.el8pc | RHSA-2024:2010 |
| Red Hat Satellite 6 | python3.11-jinja2 | 3.1.3-1.el8pc | RHSA-2024:2010 |
| Red Hat Satellite 6 | rubygem-activesupport | 6.1.7.6-1.el8sat | RHSA-2024:2010 |
| Red Hat Satellite 6 | rubygem-audited | 5.4.2-1.el8sat | RHSA-2024:2010 |
| Red Hat Satellite 6 | rubygem-puma | 6.4.2-1.el8sat | RHSA-2024:2010 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhui 4 | python-aiohttp +1 | 3.9.2-1.el8ui | RHSA-2024:1878 |
| Red Hat Rhui 4 | python-cryptography +1 | 41.0.6-1.el8ui | RHSA-2024:1878 |
| Red Hat Rhui 4 | python-django +1 | 4.2.11-1.el8ui | RHSA-2024:1878 |
| Red Hat Rhui 4 | python-ecdsa +1 | 0.18.0-4.el8ui | RHSA-2024:1878 |
| Red Hat Rhui 4 | python-jinja2 +1 | 3.1.3-1.el8ui | RHSA-2024:1878 |
| Red Hat Ansible Automation Platform Inside 2 | python-jinja2 +1 | 3.1.3-1.el9ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform Inside 2 | python-pygments +1 | 2.17.2-1.el9ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform Inside 2 | python39-jinja2 +1 | 3.1.3-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform Inside 2 | python39-pygments +1 | 2.17.2-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform Inside 2 | receptor +1 | 1.4.5-1.el8ap | RHSA-2024:1640 |
| Red Hat Ansible Automation Platform Developer 2 | python-jinja2 +1 | 3.1.3-1.el9ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform Developer 2 | python-pygments +1 | 2.17.2-1.el9ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform Developer 2 | python39-jinja2 +1 | 3.1.3-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform Developer 2 | python39-pygments +1 | 2.17.2-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform Developer 2 | receptor +1 | 1.4.5-1.el8ap | RHSA-2024:1640 |
| Red Hat Ansible Automation Platform 2 | ansible-automation-platform-installer | 2.4-6.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | ansible-rulebook +3 | 1.0.5-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | automation-controller-venv-tower | 4.5.5-2.el8ap | RHSA-2024:1640 |
| Red Hat Ansible Automation Platform 2 | python-aiohttp +1 | 3.9.1-1.el9ap | RHSA-2024:1640, RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python-django +1 | 4.2.10-1.el9ap | RHSA-2024:1640, RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python-jinja2 +1 | 3.1.3-1.el9ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python-pillow +1 | 10.0.1-1.el9ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python-pycryptodomex +1 | 3.20.0-1.el9ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python-pygments +1 | 2.17.2-1.el9ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python39-aiohttp +1 | 3.9.1-1.el8ap | RHSA-2024:1640, RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python39-django +1 | 4.2.10-1.el8ap | RHSA-2024:1640, RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python39-jinja2 +1 | 3.1.3-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python39-pillow +1 | 10.0.1-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python39-pycryptodomex +1 | 3.20.0-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | python39-pygments +1 | 2.17.2-1.el8ap | RHSA-2024:1057 |
| Red Hat Ansible Automation Platform 2 | receptor +1 | 1.4.5-1.el8ap | RHSA-2024:1640 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | python-aiohttp | 3.9.3-150400.10.14.1 | SUSE-SU-2024:0577-1 |
| SLES 3 | python-aiohttp | 3.9.3-150400.10.14.1 | SUSE-SU-2024:0577-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP4 | python-aiohttp | 3.9.3-150400.10.14.1 | SUSE-SU-2024:0577-1 |
| SLE HPC 15 SP4 | python-aiohttp | 3.9.3-150400.10.14.1 | SUSE-SU-2024:0577-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-aiohttp | 3.9.0-1.1 | openSUSE-SU-2026:11467-1, openSUSE-SU-2024:13465-1 |
| openSUSE Leap 15.5 | python-aiohttp | 3.9.3-150400.10.14.1 | SUSE-SU-2024:0577-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | python-aiohttp | No fix yet | — |
| Azure Linux 2 (CBL-Mariner) | python-aiohttp | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | py3-cassandra-medusa +1 | 0.19.1-r1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | aiohttp | < 3.8.6 | 3.8.6 | GHSA-gfw2-4jvh-wgfg |
Advisories 15
- RHSA-2024:1640 Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.4 Product Security and Bug Fix Update Red Hat Security Advisories (RHSA) · Oct 18, 2026
- RHSA-2024:2010 Red Hat Security Advisory: Satellite 6.15.0 release Red Hat Security Advisories (RHSA) · Oct 13, 2026
- RHSA-2024:1057 Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.4 Product Security and Bug Fix Update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2024:1878 Red Hat Security Advisory: RHUI 4.8 Release - Security Updates, Bug Fixes, and Enhancements Red Hat Security Advisories (RHSA) · Sep 9, 2026
- RHSA-2024:1536 Red Hat Security Advisory: Satellite 6.14.3 Async Security Update Red Hat Security Advisories (RHSA) · Sep 9, 2026
- openSUSE-SU-2026:11467-1 python313-aiohttp-3.14.3-1.1 on GA media SUSE / openSUSE Security Updates · Aug 7, 2026
- USN-7642-1 python-aiohttp vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5828-1 python-aiohttp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-4041-1 python-aiohttp - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2024:0577-1 Security update for python-aiohttp, python-time-machine SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13465-1 python310-aiohttp-3.9.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-0949 Red Hat Satellite: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 26, 2026
- WID-SEC-2024-0522 Red Hat Ansible Automation Platform: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 24, 2025
- NCSC-2024-0305 Kwetsbaarheden verholpen in Oracle Siebel CRM NCSC-NL (Netherlands) · Jul 17, 2024
- WID-SEC-2024-1653 Oracle Siebel CRM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 16, 2024
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-gfw2-4jvh-wgfg
- https://github.com/aio-libs/aiohttp/commit/d5c12ba890557a575c313bb3017910d7616fce3d
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VDKQ6HM3KNDU4OQI476ZWT4O7DMSIT35/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQYQL6WV535EEKSNH7KRARLLMOW5WXDM/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUSJVQ7OQ55RWL4XAX2F5EZ73N4ZSH6U/