Medium severity · published Oct 19, 2026
CVE-2026-111063
AIOHTTP: Secure attribute not enforced for shared cookie
6.3
CVSS
0.2%
EPSS
No
On KEV
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the Secure attribute for a shared cookie is not enforced. An attacker can consequently cause a shared cookie marked Secure to be sent with an unencrypted request. This issue is fixed in version 3.14.4.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AI
aiohttp · aio-libs
< 3.14.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111063
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111063
github.com
https://github.com/aio-libs/aiohttp/commit/999c356d61e966faffa97b06ab0d0455226d36c5
github.com
https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4
github.com
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-494j-54xm-rwp3
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