GO-2026-6905

    Dashboard / Vulnerabilities / GO-2026-6905

    GO-2026-6905

    Published: 5 Nov 2026Last Modified: 5 Nov 2026

    Summary: Panic on negative member size in Reader.Read in github.com/blakesmith/ar

    Details: Reader.Next parses the 10-byte decimal size field of an archive member header with strconv.ParseInt without rejecting negative values. A header with a negative size leaves the reader with a negative remaining byte count, causing the subsequent call to Reader.Read to panic with a slice bounds out of range error when slicing the caller's buffer.

    References: https://github.com/golang/vulndb/issues/6905, https://github.com/blakesmith/ar/pull/10

    Affected packages

    Package

    Name: github.com/blakesmith/ar

    Purl: pkg:golang/github.com/blakesmith/ar

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    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
    GO-2026-6905 | CVE-DB