CVE WatchJul 13, 2026

CVE-2026-54736

Phalcon is a high-performance, full-stack PHP framework. Prior to 5.14.1, Phalcon\Encryption\Crypt::decrypt compares the attacker-supplied H

CVSS

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No CVSS

EPSS

0.1%

KEV

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Exploit Today

0-100

Published: Jul 10, 2026 · Last modified: Jul 13, 2026 · CWE-208 · CWE-347

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-07-112026-07-16

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.

Official references

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