USN-8769-1

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    USN-8769-1

    Published: 15 Sept 2026Last Modified: 16 Sept 2026

    Summary: phpseclib vulnerability

    Details: It was discovered that phpseclib did not perform padding validation in constant time when using AES in CBC mode. A remote attacker could possibly use this issue to conduct a padding oracle timing attack and obtain sensitive information.

    References: https://ubuntu.com/security/notices/USN-8769-1, https://ubuntu.com/security/CVE-2023-48795, https://ubuntu.com/security/CVE-2023-52892, https://ubuntu.com/security/CVE-2024-27354, https://ubuntu.com/security/CVE-2024-27355, https://ubuntu.com/security/CVE-2026-32935

    Affected packages

    Package

    Name: phpseclib

    Purl: pkg:deb/ubuntu/phpseclib?arch=source&distro=esm-apps-legacy%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.0.1-3ubuntu0.1+esm1

    Affected versions

    0.3.10-3

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    USN-8769-1 | CVE-DB