SB2026041032 - Information Exposure Through Timing Discrepancy in phpseclib
Published: April 10, 2026
Security Bulletin ID
SB2026041032
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information Exposure Through Timing Discrepancy (CVE-ID: CVE-2026-32935)
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to observable timing discrepancy in AES-CBC unpadding when processing ciphertext in CBC mode. A remote attacker can send specially crafted ciphertext and measure response timing to disclose sensitive information.
Remediation
Install update from vendor's website.