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Vulnerability record · CVE-2026-41898 · published 24 April 2026

CVE-2026-41898: Rust-openssl project rust-openssl vulnerability

RRust Openssl Project · Rust Openssl

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.

8.3 CVSS 4.0 High EPSS 0.45% · top 63.7% CWE-126 · CWE-126CWE-130 · CWE-130
8.3CVSS 4.0 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
15 Jul 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/rust-openssl/rust-openssl/commit/1d109020d98fff2fb2e45c39a373af3dff99b24c Patch
https://github.com/rust-openssl/rust-openssl/pull/2607 Issue Tracking
https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78 Release Notes
https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-hppc-g8h3-xhp3 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-20997Rust-openssl project rust-openssl use after free vulnerabilityAn issue was discovered in the openssl crate before 0.10.9 for Rust. A use-after-free occurs in CMS Signing.EPSS 1.7%8.1CVE-2026-41681Rust-openssl project rust-openssl stack-based buffer overflow vulnerabilityrust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.39 to before 0.10.78, EVP_DigestFinal() always writes EVP_MD_CTX_…EPSS 0.62%8.1CVE-2016-10931Rust-openssl project rust-openssl improper certificate validation vulnerabilityAn issue was discovered in the openssl crate before 0.9.0 for Rust. There is an SSL/TLS man-in-the-middle vulnerability because certificate verificat…EPSS 0.75%7.2CVE-2026-41676Rust-openssl project rust-openssl out-of-bounds write vulnerabilityrust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.27 to before 0.10.78, Deriver::derive (and PkeyCtxRef::derive) set…EPSS 0.46%7.2CVE-2026-41678Rust-openssl project rust-openssl out-of-bounds write vulnerabilityrust-openssl provides OpenSSL bindings for the Rust programming language. From to before 0.10.78, aes::unwrap_key() contains an incorrect assertion: …EPSS 0.45%1.7CVE-2026-41677Rust-openssl project rust-openssl out-of-bounds read vulnerabilityrust-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…EPSS 0.51%

Source: NIST National Vulnerability Database (record CVE-2026-41898), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.