Em resumo
- CVE-2026-27459 é uma vulnerabilidade CRÍTICO (CVSS 9.8) que afeta pyopenssl, pyopenssl (pyopenssl).
- Chance de exploração nos próximos 30 dias (EPSS): 0.73%, maior que 54.3% das vulnerabilidades.
- Correção: atualize para 26.0.0 ou posterior.
| Package | Affected versions | Patched versions |
|---|
| pyopenssl PyPI | ≥ 22.0.0, < 26.0.0
| 26.0.0
|
| pyopenssl | ≥ 22.0.0, < 26.0.0
| 26.0.0
|
Description
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.
Cookie values that are too long are now rejected.
NVD 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.
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