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Critical severity9.1NVD Advisory· Published Sep 30, 2020· Updated Jun 17, 2026

CVE-2020-21524

CVE-2020-21524

Description

There is a XML external entity (XXE) vulnerability in halo v1.1.3, The function of importing other blogs in the background(/api/admin/migrations/wordpress) needs to parse the xml file, but it is not used for security defense, This vulnerability can detect the intranet, read files, enable ddos attacks, etc. exp:https://github.com/halo-dev/halo/issues/423

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Affected products

3
  • Halo Dev/Halo2 versions
    cpe:2.3:a:halo:halo:1.1.3:-:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:halo:halo:1.1.3:-:*:*:*:*:*:*
    • (no CPE)range: <=1.1.3
  • halo/halodescription

Patches

Vulnerability mechanics

References

1

News mentions

0

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