CVE-2026-41898
Medium
Description
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.24 to before 0.10.78, the FFI trampolines behind SslContextBuilder::set_psk_client_callback, set_psk_server_callback, set_cookie_generate_cb, and set_stateless_cookie_generate_cb forwarded the user closure's returned usize directly to OpenSSL without checking it against the &mut [u8] that was handed to the closure. This can lead to buffer overflows and other unintended consequences. This vulnerability is fixed in 0.10.78.
SeverityMedium
CVSS5.3
Exploit probability—
ProductRust-openssl
PublishedApr 24, 2026
First seenApr 24, 2026
Weakness typeCWE-126CWE-126CWE-130CWE-130
How to fix
Update
- rust-openssl_project rust-openssl0.10.78 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rust-openssl_project rust-openssl | 0.9.24 ≤ v < 0.10.78 | 0.10.78 |
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