CVE-2023-30798

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 2.0%, top 16% 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, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 0

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

There MultipartParser usage in Encode's Starlette python framework before versions 0.25.0 allows an unauthenticated and remote attacker to specify any number of form fields or files which can cause excessive memory usage resulting in denial of service of the HTTP service.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
67.2%
KEV
Not listed

Published

April 21, 2023

Last Modified

July 15, 2026

Advisory Details (3)

Auto-updated Jul 15, 2026
Patch available. Sources: github_commit, github.
generic

MultipartParser DOS with too many fields or files in Starlette Framework | Advisories | VulnCheck

https://vulncheck.com/advisories/starlette-multipartparser-dos
github Patch Available

MultipartParser DOS with too many fields or files · Advisory · Kludex/starlette · GitHub

https://github.com/encode/starlette/security/advisories/GHSA-74m5-2c7w-9w3x
github_commit Patch Available

commit 8c74c2c8dba7 (encode/starlette)

Patch available: encode/starlette 0.43.0 (contains commit 8c74c2c8dba7)

https://github.com/encode/starlette/commit/8c74c2c8dba7030154f8af18e016136bea1938fa

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
starlette0.1.0 ... 0.9.9 (128 versions)0.25.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 46× 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.

Showing the most recent 100 of 102 total refreshes for this CVE.

  1. 2026-07-22 14:06 UTCEPSS rescore
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  3. 2026-07-21 15:23 UTCEPSS rescore
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  1. 2026-07-07 13:44 UTCEPSS rescore
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  45. 2026-06-10 09:47 UTCOSV refresh
  46. 2026-06-08 14:15 UTCEPSS rescore
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  48. 2026-06-07 15:23 UTCEPSS rescore
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  50. 2026-06-06 13:46 UTCEPSS rescore
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  74. 2026-05-26 07:18 UTCEPSS rescore
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-30798?
CVE-2023-30798 is a high vulnerability published on April 21, 2023. There MultipartParser usage in Encode's Starlette python framework before versions 0.25.0 allows an unauthenticated and remote attacker to specify any number of form fields or files which can cause excessive memory usage resulting in denial of service of the HTTP service.
When was CVE-2023-30798 disclosed?
CVE-2023-30798 was first published in the National Vulnerability Database on April 21, 2023, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-30798 actively exploited?
CVE-2023-30798 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 67.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-30798?
CVE-2023-30798 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-30798?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-30798, 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.

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