CVE-2026-45784
High
Description
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.50 until 0.10.80, CipherCtxRef::cipher_update_inplace in openssl/src/cipher_ctx.rs 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 issue is fixed in version 0.10.80.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Sfackler Openssl
PublishedJul 17, 2026
First seenJul 17, 2026
Weakness typeCWE-131CWE-131CWE-787Out-of-bounds write
How to fix
Update
- sfackler openssl0.10.80 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sfackler openssl | 0.10.50 ≤ v < 0.10.80 | 0.10.80 |
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