Timing Attack Affecting phpseclib/phpseclib package, versions <1.0.27>=2.0.0, <2.0.52>=3.0.0, <3.0.50
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-PHPSECLIBPHPSECLIB-15701264
- published20 Mar 2026
- disclosed20 Mar 2026
- creditUnknown
Introduced: 20 Mar 2026
NewCVE-2026-32935 (opens in a new tab)How to fix?
Upgrade phpseclib/phpseclib to version 1.0.27, 2.0.52, 3.0.50 or higher.
Overview
phpseclib/phpseclib is a PHP Secure Communications Library - Pure-PHP implementations of RSA, AES, SSH2, SFTP, X.509 etc.
Affected versions of this package are vulnerable to Timing Attack via the AES algorithm in CBC mode. An attacker can recover sensitive information by exploiting timing differences during decryption operations.
Workaround
This issue can be mitigated by using AES in CTR, CFB or OFB modes.