Is CVE-2026-111063 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-111063 being exploited in the wild.

How severe is CVE-2026-111063?

Low severity, published 19 October 2026.

Which products and versions are affected?

Aio-Libs Aiohttp before 3.14.4; aiohttp (PyPI) <= 3.14.3, ECOSYSTEM:introduced=0,fixed=3.14.4.

Is there a fix for CVE-2026-111063?

Yes. aiohttp (PyPI): upgrade to 3.14.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-111063 attacked?

It is attacked over the network.

Am I affected by CVE-2026-111063?

Check whether you run Aio-Libs Aiohttp or aiohttp (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-111063: AIOHTTP secure cookie enforcement bypass

Q: Is there a fix for CVE-2026-111063?

Yes. aiohttp (PyPI): upgrade to 3.14.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-111063 attacked?

It is attacked over the network.

Q: Am I affected by CVE-2026-111063?

Check whether you run Aio-Libs Aiohttp or aiohttp (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-111063 · Severity: low · Published 2026-10-19

AIOHTTP is an asynchronous HTTP client/server framework for Python. Prior to version 3.14.4, the framework fails to enforce the Secure attribute on cookies marked for encrypted transmission. An attacker can force a web browser or client to send sensitive cookies over unencrypted HTTP connections, exposing them to interception and theft.

Technologies: Aio-Libs Aiohttp, aiohttp (PyPI). Vendors: Aio-Libs, PyPI.

Quick answers

Is CVE-2026-111063 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-111063 being exploited in the wild.
How severe is CVE-2026-111063?: Low severity, published 19 October 2026.
Which products and versions are affected?: Aio-Libs Aiohttp before 3.14.4; aiohttp (PyPI) <= 3.14.3, ECOSYSTEM:introduced=0,fixed=3.14.4.
Is there a fix for CVE-2026-111063?: Yes. aiohttp (PyPI): upgrade to 3.14.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-111063 attacked?: It is attacked over the network.
Am I affected by CVE-2026-111063?: Check whether you run Aio-Libs Aiohttp or aiohttp (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

aiohttp (PyPI): upgrade to 3.14.4 or later
```
pip install "aiohttp>=3.14.4"
```

Technical details

AIOHTTP does not properly enforce the Secure cookie attribute, allowing cookies intended for HTTPS-only transmission to be sent over plain HTTP. This is a cookie handling vulnerability in the framework's HTTP client/server implementation. An attacker can exploit this by downgrading the connection or intercepting traffic to capture cookies marked Secure.

Affected products

aio-libs AIOHTTP before 3.14.4

Identifiers

CVE-2026-111063
GHSA-494j-54xm-rwp3

Timeline

2026-10-19: disclosed
2026-10-05: patched

References

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