cve.bz

CVE-2026-54736

8.2 highEPSS 0.2%

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 4.0
8.2CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)
CWEs
CWE-208, CWE-347
Published
Modified
Record from
the NVD, synced

References

Check your stackJSON