# CVE-2026-41677

> Vulnerability · severity: **CRITICAL** (CVSS 9.1).

## 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.

## Key facts

- **CVE ID:** CVE-2026-41677
- **Published:** 2026-04-24
- **CVSS severity:** CRITICAL
- **CVSS base score:** 9.1
- **CWE codes:** CWE-125, CWE-1284

## Affected products

- `rust-openssl_project:rust-openssl`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41677

## Citation

> AI Analytics. CVE-2026-41677. Retrieved 2026-07-23 from https://api.ai-analytics.org/cve/CVE-2026-41677. Derived from NIST NVD. Licensed CC0.

---

*[Dataset catalog](https://api.ai-analytics.org/datasets/) · [AI Analytics](https://api.ai-analytics.org/) · CC0 1.0*