CVE-2026-82261

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-28. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions and form enabled contain a CPU exhaustion vulnerability in form deserialization. An attacker can send malformed form data to cause the server to become unresponsive while processing the request, resulting in denial of service. Fixed in 2.52.2.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
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 2.52.2 CPU Exhaustion via Remote Form Deserialization | Advisories | VulnCheck

https://www.vulncheck.com/advisories/sveltekit-before-2.52.2-cpu-exhaustion-via-remote-form-deserialization
github Patch Available

CPU exhaustion in SvelteKit remote form deserialization (experimental only) · Advisory · sveltejs/kit · GitHub

https://github.com/sveltejs/kit/security/advisories/GHSA-88qp-p4qg-rqm6

Vendor Advisories for CVE-2026-82261(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—2.52.2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 92× 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. 2026-09-19 07:18 UTCGHSA enrichment
  2. 2026-09-18 19:51 UTCEG score recompute
  3. 2026-09-18 19:51 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 08:24 UTCGHSA enrichment
  6. 2026-09-17 20:51 UTCEG score recompute
  7. 2026-09-17 20:51 UTCGHSA enrichment
  8. 2026-09-17 06:47 UTCGHSA enrichment
  9. 2026-09-16 18:58 UTCEG score recompute
  10. 2026-09-16 18:58 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:55 UTCEG score recompute
  13. 2026-09-16 05:55 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 18:28 UTCGHSA enrichment
  16. 2026-09-15 06:30 UTCEG score recompute
  17. 2026-09-15 06:30 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 19:03 UTCGHSA enrichment
  21. 2026-09-14 07:36 UTCGHSA enrichment
  22. 2026-09-13 20:09 UTCEG score recompute
  23. 2026-09-13 20:09 UTCGHSA enrichment
  24. 2026-09-13 08:42 UTCGHSA enrichment
  25. 2026-09-12 21:15 UTCEG score recompute
Show 67 more
  1. 2026-09-12 21:15 UTCGHSA enrichment
  2. 2026-09-12 09:48 UTCGHSA enrichment
  3. 2026-09-11 22:21 UTCEG score recompute
  4. 2026-09-11 22:20 UTCGHSA enrichment
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 10:51 UTCEG score recompute
  8. 2026-09-11 10:51 UTCGHSA enrichment
  9. 2026-09-10 23:16 UTCGHSA enrichment
  10. 2026-09-10 11:49 UTCEG score recompute
  11. 2026-09-10 11:49 UTCGHSA enrichment
  12. 2026-09-09 23:53 UTCGHSA enrichment
  13. 2026-09-09 11:56 UTCGHSA enrichment
  14. 2026-09-09 00:29 UTCEG score recompute
  15. 2026-09-09 00:29 UTCGHSA enrichment
  16. 2026-09-08 22:01 UTCEPSS rescore
  17. 2026-09-08 10:25 UTCGHSA enrichment
  18. 2026-09-07 21:44 UTCEG score recompute
  19. 2026-09-07 21:44 UTCGHSA enrichment
  20. 2026-09-07 10:17 UTCGHSA enrichment
  21. 2026-09-06 22:50 UTCEG score recompute
  22. 2026-09-06 22:50 UTCGHSA enrichment
  23. 2026-09-06 13:48 UTCEPSS rescore
  24. 2026-09-06 11:21 UTCGHSA enrichment
  25. 2026-09-05 23:54 UTCEG score recompute
  26. 2026-09-05 23:54 UTCGHSA enrichment
  27. 2026-09-05 15:31 UTCEPSS rescore
  28. 2026-09-05 12:27 UTCGHSA enrichment
  29. 2026-09-05 01:00 UTCEG score recompute
  30. 2026-09-05 00:59 UTCGHSA enrichment
  31. 2026-09-04 13:32 UTCEG score recompute
  32. 2026-09-04 13:32 UTCGHSA enrichment
  33. 2026-09-04 05:07 UTCEPSS rescore
  34. 2026-09-04 02:00 UTCGHSA enrichment
  35. 2026-09-03 14:32 UTCGHSA enrichment
  36. 2026-09-03 03:04 UTCGHSA enrichment
  37. 2026-09-02 15:35 UTCEG score recompute
  38. 2026-09-02 15:35 UTCGHSA enrichment
  39. 2026-09-02 14:12 UTCEPSS rescore
  40. 2026-09-02 03:54 UTCGHSA enrichment
  41. 2026-09-01 16:25 UTCEG score recompute
  42. 2026-09-01 16:25 UTCGHSA enrichment
  43. 2026-09-01 13:54 UTCEPSS rescore
  44. 2026-09-01 04:56 UTCEG score recompute
  45. 2026-09-01 04:56 UTCGHSA enrichment
  46. 2026-09-01 04:40 UTCEPSS rescore
  47. 2026-09-01 04:40 UTCEPSS rescore
  48. 2026-08-31 17:24 UTCGHSA enrichment
  49. 2026-08-31 16:46 UTCGHSA enrichment
  50. 2026-08-31 04:22 UTCEG score recompute
  51. 2026-08-31 04:22 UTCGHSA enrichment
  52. 2026-08-30 19:18 UTCEPSS rescore
  53. 2026-08-30 19:17 UTCEPSS rescore
  54. 2026-08-30 16:55 UTCGHSA enrichment
  55. 2026-08-30 05:28 UTCEG score recompute
  56. 2026-08-30 05:28 UTCGHSA enrichment
  57. 2026-08-30 01:22 UTCEPSS rescore
  58. 2026-08-29 18:01 UTCGHSA enrichment
  59. 2026-08-29 06:31 UTCGHSA enrichment
  60. 2026-08-28 19:03 UTCGHSA enrichment
  61. 2026-08-28 16:36 UTCEG score recompute
  62. 2026-08-28 16:35 UTCGHSA enrichment
  63. 2026-08-28 15:37 UTCEG score recompute
  64. 2026-08-28 15:37 UTCGHSA enrichment
  65. 2026-08-28 12:22 UTCEG score recompute
  66. 2026-08-28 11:22 UTCEG score recompute
  67. 2026-08-28 11:19 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82261?
CVE-2026-82261 is a high vulnerability published on August 28, 2026. SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions and form enabled contain a CPU exhaustion vulnerability in form deserialization. An attacker can send malformed form data to cause the server to become unresponsive while processing the request, resulting in…
When was CVE-2026-82261 disclosed?
CVE-2026-82261 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-2026-82261 actively exploited?
CVE-2026-82261 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 72.1% of all scored CVEs.
What is the CVSS score of CVE-2026-82261?
CVE-2026-82261 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-82261?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-82261, 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

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