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CVE-2023-5057: The ActivityPub WordPress plugin before 1.0.0 does not escape user metadata before outputting them in mentions, which could allow users with a role of Contributor and above to perform Stored XSS attac

medium Affects activitypub (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

The ActivityPub WordPress plugin before 1.0.0 does not escape user metadata before outputting them in mentions, which could allow users with a role of Contributor and above to perform Stored XSS attac

Package
activitypub (WordPress plugin) WordPress
Affected versions
<1.0.0
Fixed in
1.0.0
Severity
medium  CVSS 5.4
Exploitation
not on CISA KEV · EPSS 0% (42.0th percentile)
Published
2023-10-16
Source
nvd

References

NVD recordactivitypub (WordPress plugin) advisories

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