mediumVulnerability
GHSA-f3cj-j4f6-wq85
Contents of `hydratable` promises were not properly stringified, potentially leading to an XSS exploit. You are vulnerable if all of the following is true: - you are using `hydratable` (an experimental feature at the time of this report) - you are passing attacker-controlled input such that a synchronous value is hydrated, then a promise value, e.g. `hydratable('someKey', () => [synchronousValue, promiseValue])`
Properties
- ghsa_id
- GHSA-f3cj-j4f6-wq85
- severity
- medium
- summary
- Svelte: SSR XSS via Insecure Promise Serialization in hydratable
- cve_id
- GHSA-f3cj-j4f6-wq85
- is_ghsa_only
- true
- ghsa_published
- 2026-05-14T20:30:09Z
- source_url
- https://github.com/advisories/GHSA-f3cj-j4f6-wq85
- ghsa_updated
- 2026-05-14T20:30:13Z
Related Entities (4)
VULNERABLE_TO (1)
←[Software]npm/svelte
AFFECTS (1)
→[Software]npm/svelte
HAS_WEAKNESS (1)
→[Weakness]Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
REPORTED_BY (1)
→[Source]GitHub Advisory Database
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