CVE-2026-82256

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-08-28. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

August 28, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Aug 28, 2026
Patch available. Sources: github.
generic

SvelteKit before 2.69.1 Denial of Service via Remote Form | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sveltekit-before-2.69.1-denial-of-service-via-remote-form
github Patch Available

Big remote form function payloads can cause Node process to crash · Advisory · sveltejs/kit · GitHub

https://github.com/sveltejs/kit/security/advisories/GHSA-wqjv-9729-c5q2

Vendor Advisories for CVE-2026-82256(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@sveltejs/kit—2.69.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 19× in last 7d / 63× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 22:03 UTCEG score recompute
  2. 2026-09-18 22:03 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 20:51 UTCEG score recompute
  5. 2026-09-17 20:51 UTCGHSA enrichment
  6. 2026-09-16 18:58 UTCEG score recompute
  7. 2026-09-16 18:58 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 15:42 UTCEG score recompute
  11. 2026-09-15 15:42 UTCGHSA enrichment
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-14 14:29 UTCEG score recompute
  15. 2026-09-14 14:29 UTCGHSA enrichment
  16. 2026-09-13 13:16 UTCEG score recompute
  17. 2026-09-13 13:16 UTCGHSA enrichment
  18. 2026-09-12 12:04 UTCEG score recompute
  19. 2026-09-12 12:04 UTCGHSA enrichment
  20. 2026-09-11 14:53 UTCEPSS rescore
  21. 2026-09-11 14:53 UTCEPSS rescore
  22. 2026-09-11 10:51 UTCEG score recompute
  23. 2026-09-11 10:51 UTCGHSA enrichment
  24. 2026-09-10 09:35 UTCEG score recompute
  25. 2026-09-10 09:35 UTCGHSA enrichment
Show 38 more
  1. 2026-09-09 08:22 UTCEG score recompute
  2. 2026-09-09 08:22 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 07:10 UTCEG score recompute
  5. 2026-09-08 07:10 UTCGHSA enrichment
  6. 2026-09-07 05:58 UTCEG score recompute
  7. 2026-09-07 05:57 UTCGHSA enrichment
  8. 2026-09-06 13:48 UTCEPSS rescore
  9. 2026-09-06 04:45 UTCEG score recompute
  10. 2026-09-06 04:45 UTCGHSA enrichment
  11. 2026-09-05 15:31 UTCEPSS rescore
  12. 2026-09-05 03:33 UTCEG score recompute
  13. 2026-09-05 03:33 UTCGHSA enrichment
  14. 2026-09-04 05:07 UTCEPSS rescore
  15. 2026-09-04 02:21 UTCGHSA enrichment
  16. 2026-09-03 01:05 UTCEG score recompute
  17. 2026-09-03 01:04 UTCGHSA enrichment
  18. 2026-09-02 14:12 UTCEPSS rescore
  19. 2026-09-01 23:50 UTCEG score recompute
  20. 2026-09-01 23:50 UTCGHSA enrichment
  21. 2026-09-01 13:54 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-08-31 22:37 UTCGHSA enrichment
  25. 2026-08-30 21:29 UTCEG score recompute
  26. 2026-08-30 21:29 UTCGHSA enrichment
  27. 2026-08-30 19:18 UTCEPSS rescore
  28. 2026-08-30 19:17 UTCEPSS rescore
  29. 2026-08-30 01:22 UTCEPSS rescore
  30. 2026-08-29 20:16 UTCGHSA enrichment
  31. 2026-08-28 19:03 UTCGHSA enrichment
  32. 2026-08-28 16:36 UTCEG score recompute
  33. 2026-08-28 16:35 UTCGHSA enrichment
  34. 2026-08-28 15:37 UTCEG score recompute
  35. 2026-08-28 15:37 UTCGHSA enrichment
  36. 2026-08-28 12:22 UTCEG score recompute
  37. 2026-08-28 11:22 UTCEG score recompute
  38. 2026-08-28 11:19 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-82256?
CVE-2026-82256 is a medium vulnerability published on August 28, 2026. 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.
When was CVE-2026-82256 disclosed?
CVE-2026-82256 was first published in the National Vulnerability Database on August 28, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82256 actively exploited?
CVE-2026-82256 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.7% of all scored CVEs.
What is the CVSS score of CVE-2026-82256?
CVE-2026-82256 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-82256?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82256, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-82256

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