CVE-2026-42567
- Source
- https://cve.org/CVERecord?id=CVE-2026-42567
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42567.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-42567
- Aliases
- Published
- 2026-06-09T16:22:22Z
- Modified
- 2026-10-21T02:57:50Z
- Severity
-
- 5.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Svelte: ReDoS in `<svelte:element>` Tag Validation
- Details
-
Svelte is a performance oriented web framework. From version 5.51.5 to before version 5.55.7, an internal regex in the Svelte runtime can take exponential time to test in <svelte:element this={tag}></svelte:element>. This issue has been patched in version 5.55.7.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-1333" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42567.json" }- References
Affected packages
Git / github.com/sveltejs/svelte
Affected ranges
- Type
- GIT
- Repo
- https://github.com/sveltejs/svelte
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "5.51.5" }, { "fixed": "5.55.7" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "original_tag": "svelte@5.55.7", "range": [ { "fixed": "4d8f99a2709e3c02e48d8bc6c77458f4ba49d0e3" } ], "source": "REFERENCES_TAG" }, { "cpe": "cpe:2.3:a:svelte:svelte:*:*:*:*:*:node.js:*:*", "range": [ { "introduced": "5.51.5" }, { "fixed": "5.55.7" } ], "source": "CPE_RANGE" } ] }
Affected versions
svelte@5.*
svelte@5.51.5
svelte@5.52.0
svelte@5.53.0
svelte@5.53.1
svelte@5.53.10
svelte@5.53.11
svelte@5.53.12
svelte@5.53.13
svelte@5.53.2
svelte@5.53.3
svelte@5.53.4
svelte@5.53.5
svelte@5.53.6
svelte@5.53.7
svelte@5.53.8
svelte@5.53.9
svelte@5.54.0
svelte@5.54.1
svelte@5.55.0
svelte@5.55.1
svelte@5.55.2
svelte@5.55.3
svelte@5.55.4
svelte@5.55.5
svelte@5.55.6