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CVE-2026-54736

CVE-2026-54736 · Phalcon: Non-constant-time HMAC verification in `Encryption\Crypt::decrypt` (timing side-channel)

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.2 · High · EPSS 0.2% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • cphalcon

    Versions
    • < 5.14.1: Affected

    No fix published

  • phalcon/cphalcon Packagist

    Versions
    • 5.10.0
    • 5.12.0
    • 5.9.0
    • 5.9.1
    • 5.9.2
    • 5.9.3
    • v3.0.0
    • v3.0.1
    • v3.0.2
    • v3.0.3
    • v3.0.4
    • v3.1.0
    • v3.1.0-alpha1
    • v3.1.0-alpha2
    • v3.1.1
    • v3.1.2
    • v3.2.0
    • v3.2.1
    • v3.2.2
    • v3.2.3
    • v3.2.4
    • v3.3.0
    • v3.3.1
    • v3.3.2
    • v3.4.0
    • v3.4.1
    • v3.4.2
    • v3.4.3
    • v3.4.4
    • v3.4.5
    • v4.0.0
    • v4.0.0-alpha.2
    • v4.0.0-alpha.3
    • v4.0.0-alpha.4
    • v4.0.0-alpha.5
    • v4.0.0-alpha1
    • v4.0.0-beta.1
    • v4.0.0-beta.2
    • v4.0.0-rc.1
    • v4.0.0-rc.2
    • v4.0.0-rc.3
    • v4.0.1
    • v4.0.2
    • v4.0.3
    • v4.0.4
    • v4.0.5
    • v4.0.6
    • v4.1.0
    • v4.1.1
    • v4.1.2
    • v4.1.3
    • v5.0.0
    • v5.0.0-alpha.1
    • v5.0.0-alpha.2
    • v5.0.0RC1
    • v5.0.0RC2
    • v5.0.0RC3
    • v5.0.0RC4
    • v5.0.0alpha3
    • v5.0.0alpha4
    • v5.0.0alpha5
    • v5.0.0alpha6
    • v5.0.0alpha7
    • v5.0.0beta1
    • v5.0.0beta2
    • v5.0.0beta3
    • v5.0.1
    • v5.0.2
    • v5.0.3
    • v5.0.4
    • v5.0.5
    • v5.1.0
    • v5.1.1
    • v5.1.2
    • v5.1.3
    • v5.1.4
    • v5.11.0
    • v5.11.1
    • v5.12.1
    • v5.13.0
    • v5.14.0
    • v5.2.0
    • v5.2.1
    • v5.2.2
    • v5.2.3
    • v5.3.0
    • v5.3.1
    • v5.4.0
    • v5.5.0
    • v5.6.0
    • v5.6.1
    • v5.6.2
    • v5.7.0
    • v5.8.0
    Affected ranges
    • ECOSYSTEM: < 5.14.1

    Update to 5.14.1

Original sources

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