GHSA-vc89-hccf-rq55

    Dashboard / Vulnerabilities / GHSA-vc89-hccf-rq55

    GHSA-vc89-hccf-rq55

    Published: 6 Jan 2022Last Modified: 16 Dec 2025

    Summary: Hash collision in typelevel jawn

    Details: ### Impact Extenders of the `org.typelevel.jawn.SimpleFacade` and `org.typelevel.jawn.MutableFacade` who don't override `objectContext()` are vulnerable to a hash collision attack. Most applications do not implement these traits directly, but inherit from a library: Affected implementations include: * `org.http4s` :: `http4s-play-json` * `org.typelevel :: jawn-ast` (< 0.8.0) * `org.typelevel :: jawn-play` (discontinued) * `org.typelevel :: jawn-rojoma` (discontinued) * `org.typelevel :: jawn-spray` (discontinued) Unaffected implementations include: * `io.argonaut :: argonaut-jawn` * `io.circe :: circe-parser` * `org.typelevel :: jawn-ast` (>= 0.8.0) * `org.typelevel :: jawn-json4s` (discontinued) * `org.typelevel :: jawn-argonaut` (discontinued) ### Patches `jawn-parser-1.3.2` fixes the issue. ### Workarounds Override `objectContext()` to use a collision-safe collection. See [the patch](https://github.com/typelevel/jawn/pull/390/files) for an example in both `SimpleFacade` and `MutableFacade`. ### References * https://github.com/typelevel/jawn/pull/390 ### Credits * @kag0, for the report and the patch ### For more information If you have any questions or comments about this advisory: * Open an issue in [typelevel/jawn](https://github.com/typelevel/jawn) * E-mail a maintainer: * [@rossabaker](mailto:[email protected])

    Affected packages

    Package

    Name: org.typelevel:jawn-parser_0.25

    Purl: pkg:maven/org.typelevel/jawn-parser_0.25

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.0.0

    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
    GHSA-vc89-hccf-rq55 | CVE-DB