CVE-2021-32723

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    CVE-2021-32723

    Published: 28 Jun 2021Last Modified: 8 Jul 2026

    Summary:

    Details: Prism is a syntax highlighting library. Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS). When Prism is used to highlight untrusted (user-given) text, an attacker can craft a string that will take a very very long time to highlight. This problem has been fixed in Prism v1.24. As a workaround, do not use ASCIIDoc or ERB to highlight untrusted text. Other languages are not affected and can be used to highlight untrusted text.

    References: https://github.com/PrismJS/prism/security/advisories/GHSA-gj77-59wh-66hg, https://github.com/PrismJS/prism/pull/2688, https://github.com/PrismJS/prism/pull/2774, https://www.oracle.com/security-alerts/cpujan2022.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -3432b4b1e4440d6592ed82b6b5b9e72f660e43a8

    Affected versions

    v1.23.0

    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
    CVE-2021-32723 | CVE-DB