CVE-2026-45784
rust-openssl: Potential out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers
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
How to fix CVE-2026-45784
To remediate CVE-2026-45784, upgrade the affected package to a fixed version below.
- crates.io/openssl—upgrade to 0.10.80 or later
Is CVE-2026-45784 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-45784.
Affected packages (1)
- >= 0.10.50, < 0.10.80
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N |