What’s Vulnerable › Vulnerabilities

CVE-2023-53159

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-07-28 · updated 2026-09-17
• Weakness: CWE-126

Description

The openssl crate before 0.10.55 for Rust allows an out-of-bounds read via an empty string to X509VerifyParamRef::set_host.

Affected products

• sfackler openssl: before 0.10.55 — fixed in 0.10.55

How to fix

Upgrade to a fixed version: sfackler openssl 0.10.55. Check the vendor advisory for mitigations.

References

• https://crates.io/crates/openssl
• https://github.com/sfackler/rust-openssl/issues/1965
• https://rustsec.org/advisories/RUSTSEC-2023-0044.html

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