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VulnerabilityPublished

CVE-2026-128118: sveltejs kit · Information Exposure

Affects sveltejs kitSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High : upgrade to 3.1.1 soon.

Data as of 13 Nov 2026, 19:50 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.17.5
Patch
Available – fixed in 3.1.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade sveltejs kit to 3.1.1.

Affected software

ProductAffectedFixed in
sveltejskitAffected
  • >=3.0.0 <3.1.1
Fixed in
  • 3.1.1

AI-suggested

Upgrade SvelteKit to version 3.1.1 or later, where the issue is fixed. No other mitigation is required as the vulnerability is resolved in this official release.

Description

SvelteKit versions from 3.0.0 up to but not including 3.1.1 contain a vulnerability where server-only modules imported via src/params.js could be bundled into client-side code. This exposure allows private environment values or other server secrets to be accessible in the client bundle. The issue is resolved in version 3.1.1.

References

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