Cross-Site Request Forgery (CSRF) in prefecthq/prefect

published 2023-11-16 2 y ago modified 2026-09-10 1 mo ago also GHSA-4hh5-2678-83fx , PYSEC-2026-1799 , EUVD-2023-2878

cvss: 8.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits: 0; none known

Cross-Site Request Forgery (CSRF) in GitHub repository prefecthq/prefect prior to 2.16.5.

Patch / fix

fixed in 2 links 1

pypi prefect 2.16.5
prefecthq prefecthq/prefect 2.16.5

github.com/prefecthq/prefect@227dfcc commit

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.com https://huntr.com/bounties/dab47d99-551c-4355-9ab1-c99cb90235af referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
GitHub	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
OSV	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
pypi	prefect	>=2.0.0, <2.16.5	2.16.5

Affected products

prefecthq prefecthq/prefect

Classification

Weakness

CWE-352 Cross-Site Request Forgery

References

github.com /prefecthq/prefect/commit/227dfcc7e3374c212a4bcd68b14e090b1c02d9d3
web
huntr.com /bounties/dab47d99-551c-4355-9ab1-c99cb90235af
web, exploit
nvd.nist.gov /vuln/detail/CVE-2023-6022
advisory
github.com /PrefectHQ/prefect/blob/main/RELEASE-NOTES.md#release-2165
web
github.com /prefecthq/prefect
package
pypi.org /project/prefect
package
github.com /advisories/GHSA-4hh5-2678-83fx
advisory

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.

Summary