Medium severityNVD Advisory· Published Jul 30, 2026· Updated Jul 30, 2026
CVE-2026-59881
CVE-2026-59881
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the WebSocket client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated, allowing a malicious server to cause unexpected CPU and memory consumption. This issue is fixed in version 3.14.2.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
aiohttpPyPI | < 3.14.2 | 3.14.2 |
Affected products
29- Range: <3.14.2
- osv-coords27 versionspkg:apk/chainguard/airflow-3pkg:apk/chainguard/airflow-core-2pkg:apk/chainguard/apache-beam-python-3.11-sdkpkg:apk/chainguard/apache-beam-python-3.12-sdkpkg:apk/chainguard/apache-beam-python-3.13-sdkpkg:apk/chainguard/awxpkg:apk/chainguard/dask-kubernetespkg:apk/chainguard/dask-kubernetes-fipspkg:apk/chainguard/datahub-ingestion-fipspkg:apk/chainguard/kserve-models-web-apppkg:apk/chainguard/kserve-storage-controllerpkg:apk/chainguard/lmcache-cuda-12.8pkg:apk/chainguard/open-webuipkg:apk/chainguard/puppygraph-pythonpkg:apk/chainguard/py3-cassandra-medusapkg:apk/chainguard/py3.10-vllm-cuda-12.4pkg:apk/chainguard/py3.12-vllm-cuda-12.4pkg:apk/chainguard/py3.13-scanner-test-libraries-aiohttppkg:apk/chainguard/text-generation-inferencepkg:apk/chainguard/tritonserver-backend-vllm-cuda-13.0pkg:apk/wolfi/airflow-3pkg:apk/wolfi/dask-kubernetespkg:apk/wolfi/kserve-storage-controllerpkg:apk/wolfi/open-webuipkg:apk/wolfi/py3-cassandra-medusapkg:rpm/opensuse/python-aiohttp&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/python-aiohttp&distro=openSUSE%20Tumbleweed
< 3.3.1-r1+ 26 more
- (no CPE)range: < 3.3.1-r1
- (no CPE)range: < 2.11.2-r6
- (no CPE)range: < 2.75.0-r2
- (no CPE)range: < 2.75.0-r1
- (no CPE)range: < 2.75.0-r2
- (no CPE)range: < 24.6.1-r49
- (no CPE)range: < 2026.3.0-r11
- (no CPE)range: < 2026.3.0-r6
- (no CPE)range: < 1.6.0-r9
- (no CPE)range: < 1.0.1-r2
- (no CPE)range: < 0.19.0-r5
- (no CPE)range: < 0.5.3-r0
- (no CPE)range: < 0.11.0-r6
- (no CPE)range: < 0.1.6-r2
- (no CPE)range: < 0.29.1-r1
- (no CPE)range: < 0.18.1-r7
- (no CPE)range: < 0.18.1-r7
- (no CPE)range: < 0.0.1-r4
- (no CPE)range: < 3.3.7-r23
- (no CPE)range: < 25.11-r11
- (no CPE)range: < 3.3.1-r1
- (no CPE)range: < 2026.3.0-r11
- (no CPE)range: < 0.19.0-r5
- (no CPE)range: < 0.11.0-r6
- (no CPE)range: < 0.29.1-r1
- (no CPE)range: < 3.11.16-160000.7.1
- (no CPE)range: < 3.14.3-1.1
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-mq44-7p77-q5h7ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-59881ghsaADVISORY
- github.com/aio-libs/aiohttp/releases/tag/v3.14.2nvdWEB
- github.com/aio-libs/aiohttp/commit/47fb6ae354d4fa22048f4dbe7dbf82b625f0a2f6nvdWEB
- github.com/aio-libs/aiohttp/pull/12978nvdWEB
- github.com/aio-libs/aiohttp/security/advisories/GHSA-mq44-7p77-q5h7nvdWEB
News mentions
0No linked articles in our index yet.