PT-2026-42029 · Crates.Io · Openssl

Published 2026-05-19 · Updated 2026-05-19 · CVE-2026-45784

OSV

CVSS v4.0

5.1

Medium

Base vector

AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

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

Fix

Memory Corruption

Weakness Enumeration

CWE-787

CWE-131

Related Identifiers

CVE-2026-45784

GHSA-PHQJ-4MHP-Q6MQ

Affected Products

Openssl

References · 3

• https://osv.dev/vulnerability/GHSA-phqj-4mhp-q6mq · Vendor Advisory
• https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-phqj-4mhp-q6mq · Note
• https://github.com/rust-openssl/rust-openssl · Note