TI-2020-07546 Aliases CVE-2020-9433 GHSA-4mrg-rj5w-4j8j

openssl_x509_check_email in lua-openssl 0.7.7-1 mishandles X.509 certificate validation…

MEDIUM 41CWE-295Published 2020-02-27 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Spoofing
Confidentiality · integrity · availability: High · High · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.

Summary

openssl_x509_check_email in lua-openssl 0.7.7-1 mishandles X.509 certificate validation because it uses lua_pushboolean for certain non-boolean return values.

Why it matters now

EPSS 0.00843 58th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:lua-openssl_project:lua-openssl:0.7.7-1:::::::*	0.7.7-1	Vulnerable	Lua-openssl Project

cpe:2.3:a:lua-openssl_project:lua-openssl:0.7.7-1:*:*:*:*:*:*:* Versions 0.7.7-1 Vulnerable ·Lua-openssl Project

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-9433
2026-10-03 Alias added: GHSA-4mrg-rj5w-4j8j

References

Patch 1

https://github.com/zhaozg/lua-openssl/commit/a6dc186dd4b6b9e329a93cca3e7e3cfccfdf3cca

TI-2020-07547 openssl_x509_check_ip_asc in lua-openssl 0.7.7-1 mishandles X.509 certificate validation… CVSS 3.1CRITICAL 9.1
TI-2020-07545 openssl_x509_check_host in lua-openssl 0.7.7-1 mishandles X.509 certificate validation… CVSS 3.1CRITICAL 9.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences