CVE-2026-54283

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 81% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — Patch released this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

A fix is available — apply it.

Starlette is a lightweight ASGI framework/toolkit. From 0.4.1 until 1.3.1, request.form() accepts max_fields and max_part_size to bound resource consumption while parsing form data. These limits are enforced for multipart/form-data, but silently ignored for application/x-www-form-urlencoded. An unauthenticated attacker can therefore send a urlencoded body with an arbitrarily large number of fields or an arbitrarily large field, even when the application configured limits it believed would apply. This vulnerability is fixed in 1.3.1.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
19.3%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 26, 2026

Advisory Details (1)

Auto-updated Jun 22, 2026
Patch available. Sources: github.
github Patch Available

request.form() limits silently ignored for application/x-www-form-urlencoded enable DoS · Advisory · Kludex/starlette · GitHub

https://github.com/Kludex/starlette/security/advisories/GHSA-82w8-qh3p-5jfq

Vendor Advisories for CVE-2026-54283(3)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhaiis/vllm-cuda-rhel9:17829510122026-07-06redhat
redhatrhaiis/vllm-rocm-rhel9:17829512442026-07-06redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
starlette0.10.0 ... 1.3.0 (165 versions)1.3.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 61× 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. 2026-07-07 00:15 UTCEG score recompute
  2. 2026-07-07 00:15 UTCVendor advisory
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 23:23 UTCEG score recompute
  8. 2026-07-05 10:56 UTCEG score recompute
  9. 2026-07-05 02:31 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 22:26 UTCEG score recompute
  12. 2026-07-04 09:57 UTCEG score recompute
  13. 2026-07-04 06:31 UTCEPSS rescore
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-03 19:43 UTCEG score recompute
  16. 2026-07-03 07:15 UTCEG score recompute
  17. 2026-07-02 18:33 UTCEG score recompute
  18. 2026-07-02 06:06 UTCEG score recompute
  19. 2026-07-01 17:38 UTCEG score recompute
  20. 2026-07-01 15:07 UTCEPSS rescore
  21. 2026-07-01 05:02 UTCEG score recompute
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 16:16 UTCEG score recompute
  24. 2026-06-30 03:30 UTCEG score recompute
  25. 2026-06-29 15:02 UTCEG score recompute
Show 36 more
  1. 2026-06-29 14:06 UTCEPSS rescore
  2. 2026-06-29 14:06 UTCEPSS rescore
  3. 2026-06-29 02:34 UTCEG score recompute
  4. 2026-06-28 14:07 UTCEPSS rescore
  5. 2026-06-28 14:06 UTCEG score recompute
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-28 04:56 UTCEPSS rescore
  8. 2026-06-28 01:38 UTCEG score recompute
  9. 2026-06-27 13:05 UTCEG score recompute
  10. 2026-06-27 03:08 UTCEPSS rescore
  11. 2026-06-27 00:35 UTCEG score recompute
  12. 2026-06-26 11:57 UTCEG score recompute
  13. 2026-06-25 21:20 UTCEG score recompute
  14. 2026-06-25 13:49 UTCEPSS rescore
  15. 2026-06-25 08:53 UTCEG score recompute
  16. 2026-06-24 20:25 UTCEG score recompute
  17. 2026-06-24 14:05 UTCEPSS rescore
  18. 2026-06-24 07:47 UTCEG score recompute
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-23 21:33 UTCEPSS rescore
  21. 2026-06-23 18:51 UTCEG score recompute
  22. 2026-06-23 06:23 UTCEG score recompute
  23. 2026-06-22 17:15 UTCEG score recompute
  24. 2026-06-22 03:41 UTCEG score recompute
  25. 2026-06-21 14:04 UTCEG score recompute
  26. 2026-06-21 01:34 UTCEG score recompute
  27. 2026-06-20 13:05 UTCEG score recompute
  28. 2026-06-20 00:37 UTCEG score recompute
  29. 2026-06-19 12:09 UTCEG score recompute
  30. 2026-06-18 23:40 UTCEG score recompute
  31. 2026-06-18 11:11 UTCEG score recompute
  32. 2026-06-17 22:36 UTCEG score recompute
  33. 2026-06-17 10:09 UTCEG score recompute
  34. 2026-06-16 21:40 UTCEG score recompute
  35. 2026-06-16 09:13 UTCEG score recompute
  36. 2026-06-15 20:45 UTCEG score recompute

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-54283?
CVE-2026-54283 is a high vulnerability published on June 15, 2026. Starlette is a lightweight ASGI framework/toolkit. From 0.4.1 until 1.3.1, request.form() accepts maxfields and maxpart_size to bound resource consumption while parsing form data. These limits are enforced for multipart/form-data, but silently ignored for application/x-www-form-urlencoded. An…
When was CVE-2026-54283 disclosed?
CVE-2026-54283 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54283 actively exploited?
CVE-2026-54283 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-54283?
CVE-2026-54283 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-54283?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54283, 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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