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CVE-2023-30798

26
FAUCET Score

CVE-2023-30798 is a denial-of-service vulnerability affecting Encode's Starlette Python framework versions prior to 0.25.0. An unauthenticated, remote attacker can exploit this by submitting an excessive number of form fields or files, leading to high memory consumption and service disruption. With a CVSS score of 7.5 (HIGH), this vulnerability has a network attack vector, low attack complexity, and a high impact on availability. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.25.0CPE matchmatch criteria
cpe:2.3:a:encode:starlette:*:*:*:*:*:python:*:*
>= 0, < 0.25.0CPE match
cpe:2.3:a:encode:starlette:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.29%
Probability of exploitation in next 30 days
EPSS Percentile
67.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0129 is in the 47th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: starletteFixed in: 0.25.0

Vendor Advisories (1)

pipGHSA-74m5-2c7w-9w3xhigh

MultipartParser denial of service with too many fields or files

Feb 14, 2023

References

github.com / encode/starlette/commit/8c74c2c8dba7030154f8af18e016136bea1938fa
Patch
github.com / encode/starlette/security/advisories/GHSA-74m5-2c7w-9w3x
MitigationVendor Advisory
vulncheck.com / advisories/starlette-multipartparser-dos
PatchThird Party Advisory