Bug 2442917 (CVE-2026-27902)
| Summary: | CVE-2026-27902 svelte: Svelte: Cross-Site Scripting via unsanitized error output | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | jkoehler, lphiri |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A cross-site scripting (XSS) vulnerability was found in Svelte’s server-side rendering (SSR) error handling. Error messages returned from the transformError function were not properly escaped before being embedded into HTML output within hydration markers. If an application returns attacker-controlled content through transformError, the content may be interpreted as HTML in the rendered page, resulting in HTML injection and potential execution of arbitrary JavaScript in a victim’s browser. Successful exploitation could allow an attacker to access sensitive information or perform actions in the context of the affected user.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2443051 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-02-26 02:01:29 UTC
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