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Fencer Vulns
high 7.6

CVE-2024-8183 json

CORS Misconfiguration in prefecthq/prefect

published 2025-03-20 19 mo ago modified 2026-07-07 4 mo ago also GHSA-4v9f-r55g-g6hc , PYSEC-2026-1800 , EUVD-2025-6931

cvss
7.6
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits
0
none known

Summary

A CORS (Cross-Origin Resource Sharing) misconfiguration in prefecthq/prefect version 2.20.2 allows unauthorized domains to access sensitive data. This vulnerability can lead to unauthorized access to the database, resulting in potential data leaks, loss of confidentiality, service disruption, and data integrity risks.

Patch / fix

  • pypi prefect 2.20.17, 3.0.3
  • prefecthq prefecthq/prefect 3.0.3

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 7.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
OSV 3.0 7.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
GitHub 3.0 7.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L

Affected packages

ecosystem package affected fixed in
pypi prefect
>=3.0.0rc1, <3.0.3
<2.20.17
3.0.3
2.20.17

Affected products

  • prefecthq prefecthq/prefect

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.