CVE Feed

    Dashboard / CVE / CVE-2026-90771

    CVE-2026-90771

    joi before versions 17.13.8 and 18.2.9 contains a prototype pollution vulnerability in the messages compilation function that accepts __proto__ as an error code. Attackers can supply __proto__ keys in custom messages to replace the returned object's prototype, breaking downstream code relying on Object.prototype methods.

    Published:Sep 13, 2026
    Last Modified:Sep 16, 2026
    EPS:Sep 13, 2026
    EPSS Score:0.00258
    CVSS Score:3.7

    Affected Products

    Vendor
    Hapijs
    Product
    Joi

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-122131 (CVSS 6.3) — Joi 17.13.6 before 17.13.9 and 18.2.5 before 18.3.1 contains a prototype pollution vulnerability in lib/messag…
    CVE-2026-118772 (CVSS 7.5) — joi is a schema description language and data validator for JavaScript. From 17.1.1 until 17.13.9 and 18.3.1, …
    CVE-2026-92599 (CVSS 8.7) — joi (npm package `joi`, hapi.js) versions >=17.2.0 <17.13.7 and >=18.0.0 <18.2.6 are vulnerable to regular exp…
    CVE-2026-84368 (CVSS 3.7) — joi is a schema description language and data validator for JavaScript. From 16.0.0 until 17.13.6 and 18.2.5, …
    CVE-2026-84367 (CVSS 3.7) — joi is a schema description language and data validator for JavaScript. From 16.0.0 until 17.13.5 and 18.2.4, …
    CVE-2026-48038 (CVSS 5.3) — joi is a schema description language and data validator for JavaScript. Prior to 17.13.4 and 18.2.1, denial of…

    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