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Moderate severityGHSA Advisory· Published May 19, 2026· Updated May 19, 2026

rust-openssl: Potential out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers

CVE-2026-45784

Description

CipherCtxRef::cipher_update_inplace incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers (EVP_aes_{128,192,256}_wrap_pad). For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced.

This only impacts users using AES key-wrap-with-padding ciphers.

This method was missed in the fix for GHSA-xv59-967r-8726

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
opensslcrates.io
>= 0.10.50, < 0.10.800.10.80

Affected products

26

Patches

Vulnerability mechanics

References

2

News mentions

0

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