CVE-2026-82256 json
SvelteKit before 2.69.1 Denial of Service via Remote Form
published 4mo ago modified last mo. also EUVD-2026-67582 , GHSA-wqjv-9729-c5q2
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 37%
- public exploits
- 0
- none known
Summary
SvelteKit before 2.69.1 fails to properly validate remote form function payload sizes, allowing attackers to crash the Node process by sending large payloads. Repeated exploitation causes denial of service by repeatedly crashing the application process.
Patch / fix
- npm @sveltejs/kit 2.69.1
- sveltejs kit 2.69.1
Is CVE-2026-82256 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @sveltejs/kit | <2.69.1 |
2.69.1 |
Affected products
- sveltejs kit
Classification
References
-
github.com
/sveltejs/kit/pull/16219
web
-
github.com
/sveltejs/kit/commit/82b0370c793ac392cee5c2e28f4b8fed09c64582
web
-
github.com
/sveltejs/kit/security/advisories/GHSA-wqjv-9729-c5q2
vendor-advisory, web, advisory
-
vulncheck.com
/advisories/sveltekit-before-2.69.1-denial-of-service-via-remote-form
third-party-advisory
-
github.com
/sveltejs/kit
package
-
github.com
/sveltejs/kit/releases/tag/@sveltejs/kit@2.69.1
web
-
github.com
/sveltejs/kit/releases/tag/@sveltejs/kit@3.0.0-next.7
web
Sources
- CVE List CVE-2026-82256
- GitHub Advisory GHSA-wqjv-9729-c5q2
- NVD CVE-2026-82256
- Maintainer advisory GHSA-wqjv-9729-c5q2
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of sveltejs/kit published their own advisory on GitHub. Reviewed sources take precedence over it.