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CVE-2026-54736

Published Jul 10, 2026 CWE-208

Overview

CVE-2026-54736 is a known-severity vulnerability. It was published on July 10, 2026.

Technical Description

Phalcon is a high-performance, full-stack PHP framework. Prior to 5.14.1, Phalcon\Encryption\Crypt::decrypt compares the attacker-supplied HMAC tag against the freshly computed HMAC using PHP/Zephir identity comparison, which lowers to a byte-wise comparison that returns early on the first differing byte. This observable timing discrepancy can allow an attacker to recover a valid tag byte-by-byte and attach it to a chosen IV and ciphertext so that decrypt() accepts tampered encrypted content as authentic. This issue is fixed in version 5.14.1.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/phalcon/cphalcon/commit/ad53ab1b2e7ec59b3af92b0b37b8aaa099011137 GitHub github.com/phalcon/cphalcon/issues/17090 GitHub github.com/phalcon/cphalcon/pull/17091 GitHub github.com/phalcon/cphalcon/releases/tag/v5.14.1 GitHub github.com/phalcon/cphalcon/security/advisories/GHSA-8jqh-95g6-7jpj

Frequently Asked Questions

What is CVE-2026-54736?

CVE-2026-54736 is a known-severity vulnerability. It was published on July 10, 2026.

How severe is CVE-2026-54736?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-54736?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-54736?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-54736 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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