CVE-2026-41677
Critical
Description
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.0 to before 0.10.78, the *_from_pem_callback APIs did not validate the length returned by the user's callback. A password callback that returns a value larger than the buffer it was given can cause some versions of OpenSSL to over-read this buffer. OpenSSL 3.x is not affected by this. This vulnerability is fixed in 0.10.78.
SeverityCritical
CVSS9.1
Exploit probability—
ProductRust-openssl
PublishedApr 24, 2026
First seenApr 24, 2026
Weakness typeCWE-125Out-of-bounds readCWE-1284CWE-1284
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 | 0.9.0 ≤ v < 0.10.78 | 0.10.78 |
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