High severity7.5GHSA Advisory· Published Jun 22, 2026· Updated Jun 26, 2026
CVE-2026-54275
CVE-2026-54275
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, the server_hostname TLS SNI check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain, but with different per-request server_hostname parameters, then the later calls may succeed by reusing the existing connection when they should have been rejected due to the TLS SNI check. This vulnerability is fixed in 3.14.1.
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 | < 3.14.1 | 3.14.1 |
Affected products
37- osv-coords35 versionspkg:apk/chainguard/airflow-core-2pkg:apk/chainguard/py3.10-vllm-cuda-12.4pkg:apk/chainguard/request-1276pkg:apk/chainguard/authentik-2025.12pkg:apk/chainguard/authentik-fips-2026.2pkg:apk/chainguard/py3.12-vllm-cuda-12.4pkg:apk/chainguard/py3.13-vllm-cuda-13.0pkg:apk/chainguard/mlflow-fipspkg:apk/chainguard/py3.13-vllm-cuda-12.9pkg:apk/chainguard/py3.12-vllm-cuda-12.9pkg:apk/chainguard/py3.12-vllm-cuda-13.0pkg:apk/chainguard/tritonserver-backend-vllm-cuda-12.9pkg:apk/chainguard/authentik-2026.2pkg:rpm/opensuse/python-aiohttp&distro=openSUSE%20Leap%2016.0pkg:apk/chainguard/apache-beam-python-3.11-sdkpkg:apk/chainguard/open-webuipkg:apk/chainguard/apache-beam-python-3.12-sdkpkg:apk/chainguard/py3.13-scanner-test-libraries-aiohttppkg:apk/chainguard/metaflow-service-fipspkg:pypi/aiohttppkg:rpm/opensuse/python-aiohttp&distro=openSUSE%20Tumbleweedpkg:apk/chainguard/awxpkg:apk/chainguard/authentik-fips-2025.12pkg:apk/chainguard/dask-kubernetes-fipspkg:apk/chainguard/lmcache-cuda-12.8pkg:apk/chainguard/py3.10-vllm-cuda-13.0pkg:apk/wolfi/open-webuipkg:apk/chainguard/tritonserver-backend-vllm-cuda-13.0pkg:apk/wolfi/airflow-3pkg:apk/chainguard/airflow-3pkg:apk/chainguard/apache-beam-python-3.13-sdkpkg:apk/chainguard/mlflowpkg:apk/chainguard/py3.10-vllm-cuda-12.9pkg:apk/wolfi/mlflowpkg:apk/chainguard/text-generation-inference
< 2.11.2-r6+ 34 more
- (no CPE)range: < 2.11.2-r6
- (no CPE)range: < 0.18.1-r3
- (no CPE)range: < 0.29.0-r1
- (no CPE)range: < 2025.12.6-r3
- (no CPE)range: < 2026.2.4-r3
- (no CPE)range: < 0.18.1-r3
- (no CPE)range: < 0.20.2-r1
- (no CPE)range: < 3.13.0-r1
- (no CPE)range: < 0.19.1-r0
- (no CPE)range: < 0.19.1-r0
- (no CPE)range: < 0.20.2-r1
- (no CPE)range: < 25.9.0_git20260617-r2
- (no CPE)range: < 2026.2.4-r4
- (no CPE)range: < 3.11.16-160000.6.1
- (no CPE)range: < 2.74.0-r3
- (no CPE)range: < 0.9.6-r5
- (no CPE)range: < 2.74.0-r1
- (no CPE)range: < 0.0.1-r3
- (no CPE)range: < 2.5.0-r5
- (no CPE)range: < 3.14.1
- (no CPE)range: < 3.14.1-1.1
- (no CPE)range: < 24.6.1-r42
- (no CPE)range: < 2025.12.6-r2
- (no CPE)range: < 2026.3.0-r4
- (no CPE)range: < 0.5.3-r0
- (no CPE)range: < 0.20.2-r1
- (no CPE)range: < 0.9.6-r5
- (no CPE)range: < 25.11-r9
- (no CPE)range: < 3.3.1-r0
- (no CPE)range: < 3.3.1-r0
- (no CPE)range: < 2.74.0-r1
- (no CPE)range: < 3.13.0-r1
- (no CPE)range: < 0.19.1-r0
- (no CPE)range: < 3.13.0-r1
- (no CPE)range: < 3.3.7-r16
Patches
Vulnerability mechanics
References
2- github.com/advisories/GHSA-4m7w-qmgq-4wj5ghsaADVISORY
- github.com/aio-libs/aiohttp/security/advisories/GHSA-4m7w-qmgq-4wj5nvdThird Party AdvisoryWEB
News mentions
1- Aiohttp: Nine CVEs Disclosed in a Single Day, Five Memory-Exhaustion DoS FlawsVypr Intelligence · Jun 15, 2026