CVE-2026-82260 json
SvelteKit before 2.52.2 Memory Exhaustion via Remote Form Deserialization
published 8mo ago modified last mo. also EUVD-2026-67586 , GHSA-vrhm-gvg7-fpcf
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions (experimental.remoteFunctions) and form enabled contain a memory exhaustion vulnerability in remote form deserialization. Malformed form data can cause excessive memory allocation, crashing the server process and resulting in denial of service. Fixed in 2.52.2.
Patch / fix
- npm @sveltejs/kit 2.52.2
- sveltejs kit 2.52.1
Is CVE-2026-82260 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
0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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 | >=2.49.0, <2.52.2 |
2.52.2 |
Affected products
- sveltejs kit
Classification
References
-
github.com
/sveltejs/kit/commit/f47c01bd8100328c24fdb8522fe35913b0735f35
web
-
github.com
/sveltejs/kit/security/advisories/GHSA-vrhm-gvg7-fpcf
vendor-advisory, web, advisory
-
vulncheck.com
/advisories/sveltekit-before-2.52.2-memory-exhaustion-via-remote-form-deserialization
third-party-advisory
-
github.com
/sveltejs/kit
package
-
github.com
/sveltejs/kit/releases/tag/@sveltejs/kit@2.52.2
web
Sources
- CVE List CVE-2026-82260
- GitHub Advisory GHSA-vrhm-gvg7-fpcf
- NVD CVE-2026-82260
- Maintainer advisory GHSA-vrhm-gvg7-fpcf
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.