PYSEC-2026-841

    Dashboard / Vulnerabilities / PYSEC-2026-841

    PYSEC-2026-841

    Published: 6 Jul 2026Last Modified: 7 Jul 2026

    Summary: MapProxy vulnerable to cross-site scripting in demo service

    Details: MapProxy version 1.11.1 and older are vulnerable to cross-site scripting in the demo service resulting in possible information disclosure. An incomplete fix was released in v[1.10.4](https://github.com/mapproxy/mapproxy/issues/322#issuecomment-518573169), and a complete fix was released in v[1.11.1](https://github.com/mapproxy/mapproxy/commit/436c8f489761d1b4ee22b2440b53cc96bbc28aea).

    References: https://nvd.nist.gov/vuln/detail/CVE-2017-1000426, https://github.com/mapproxy/mapproxy/issues/322, https://github.com/mapproxy/mapproxy/commit/420412aad45171e05752007a0a2350c03c28dfd8, https://github.com/mapproxy/mapproxy/commit/436c8f489761d1b4ee22b2440b53cc96bbc28aea, https://github.com/mapproxy/mapproxy, https://pypi.org/project/mapproxy, https://github.com/advisories/GHSA-g4rw-82hq-8jpr

    Affected packages

    Package

    Name: mapproxy

    Purl: pkg:pypi/mapproxy

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.11.1

    Affected versions

    0.8.0
    0.8.0.dev-20100310
    0.8.0.dev-20100311
    0.8.0.dev-20100315
    0.8.0.dev-20100322
    0.8.1
    0.8.2
    0.8.3
    0.8.4
    0.8.4.1
    0.8.5

    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
    PYSEC-2026-841 | CVE-DB