CVE-2026-65059

    Dashboard / Vulnerabilities / CVE-2026-65059

    CVE-2026-65059

    Published: 2 Nov 2026Last Modified: 4 Nov 2026

    Summary: Furl versions through 3.15 for Perl allow memory exhaustion via unbounded decompression of HTTP responses

    Details: Furl versions through 3.15 for Perl allow memory exhaustion via unbounded decompression of HTTP responses. Furl inflates a response body sent with a gzip, x-gzip or deflate Content-Encoding and appends the output to the response string with no size limit. It does this whether or not the request asked for compression, and no option caps the decompressed size. Responses read with write_file or write_code are streamed rather than held in memory. A malicious server, or an attacker on a plain HTTP connection, can send a small compressed response that expands to exhaust the client's memory and end the process.

    References: http://www.openwall.com/lists/oss-security/2026/11/02/5, https://cpan.org/modules, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65059.json, https://nvd.nist.gov/vuln/detail/CVE-2026-65059, https://github.com/tokuhirom/Furl/pull/139, https://github.com/tokuhirom/Furl, https://metacpan.org/release/SYOHEX/Furl-3.15/source/lib/Furl/ZlibStream.pm

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.15

    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