An SSR XSS exists in async hydration when attacker‑controlled keys are passed to hydratable. The key is embedded inside a <script> block without HTML‑safe escaping, allowing </script> to terminate the script and inject arbitrary JavaScript. This enables remote script execution in users' browsers, with potential for session theft and account compromise. This issue affects Svelte: from 5.46.0 before 5.46.3.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-e55e601165 advisory.

    Update bundled devalue / svelte

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-0e6d3fbdcb advisory.

    Update bundled devalue / svelte

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - An SSR XSS exists in async hydration when attacker‑controlled keys are passed to hydratable. The key is
    embedded inside a <script> block without HTML‑safe escaping, allowing </script> to terminate the script
    and inject arbitrary JavaScript. This enables remote script execution in users' browsers, with potential
    for session theft and account compromise. This issue affects Svelte: from 5.46.0 before 5.46.3.
    (CVE-2025-15265)

ID	Name	Product	Family	Severity
296516	Fedora 42 : pgadmin4 (2026-e55e601165)	Nessus	Fedora Local Security Checks	medium
296513	Fedora 43 : pgadmin4 (2026-0e6d3fbdcb)	Nessus	Fedora Local Security Checks	medium
436796	SCA: security update for svelte (GHSA-6738-r8g5-qwp3)	Tenable Cloud Security	SCA Checks	medium
436796	SCA: security update for svelte (GHSA-6738-r8g5-qwp3)	Tenable Self-Hosted Container Security	SCA Checks	medium

Detections

Analytics

CVE-2025-15265

medium

Tenable Plugins

medium

medium

medium

medium