SEPTEMBER 17, 2026
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Case File

CVE-2026-74876

CRITICAL · CVSS 9.8 EPSS 0.20% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-17 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

OpenSSL versions prior to 1.4.0 are vulnerable due to a flaw in the PublicKeyBundle.from_dict() function, which allows the creation of key bundles from untrusted data without proper signature verification. This vulnerability enables attackers to encrypt data using malicious public keys, potentially leading to the exposure of sensitive information. Organizations utilizing affected OpenSSL versions should prioritize immediate updates to mitigate this critical risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-74876
Severity
CRITICAL
CVSS
9.8
EPSS
0.20%
OpenSSL

Original NVD Description

openssl_encrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.from_dict() that creates key bundles from untrusted data without verifying signatures. Attackers can call from_dict() followed by to_identity() without signature verification to encrypt data using attacker-controlled public keys, leaking secrets.

Related CVEs

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