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CVE-2026-27459
Published: Mar 17, 2026
Modified: Mar 18, 2026
PUBLISHED
Description
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values that are too long are now rejected.
| Vendor | Product | Versions |
|---|---|---|
pyca | pyopenssl | affected >= 22.0.0, < 26.0.0 |
Weaknesses (CWE)
References
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