Padding Oracle Attack

Anandhu Krishnan
Published on
14 May 2024


A vulnerability arises when an attacker can manipulate the padding on an encrypted string, inducing an error message that reveals a ‘padding oracle’ weakness. This issue affects applications and frameworks utilizing encryption poorly, such as certain versions. An attacker might exploit this to decrypt data and recover encryption keys, compromising sensitive information.


Upgrade or modify scripts to properly validate encrypted data before attempting decryption.

Automated human-like penetration testing for your web apps & APIs
Teams using Beagle Security are set up in minutes, embrace release-based CI/CD security testing and save up to 65% with timely remediation of vulnerabilities. Sign up for a free account to see what it can do for you.

Written by
Anandhu Krishnan
Anandhu Krishnan
Lead Engineer
Find website security issues in a flash
Improve your website's security posture with proactive vulnerability detection.
Free website security assessment