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CVE-2026-7722PrefectHQ prefect Health Check API health endswith improper authentication

Description

A vulnerability was detected in PrefectHQ prefect up to 3.6.21. This impacts the function endswith of the file /api/health of the component Health Check API. Performing a manipulation results in improper authentication. The attack is possible to be carried out remotely. The exploit is now public and may be used. Upgrading to version 3.6.22 will fix this issue. The patch is named e21617125335025b4b27e7d6f0ca028e8e8f3b79. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Public exploit

An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.

Show the exploits1

References tagged exploit1 reference

Timeline

  1. ID reserved

    By VulDB

  2. · 1 day later

    Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-7722, by who scored it
Scored byCVSSScoreVector
VulDBCNA (assigner)4.0Medium6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
VulDBCNA (assigner)3.1Medium5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
VulDBCNA (assigner)3.0Medium5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
VulDBCNA (assigner)2.0Medium5.0AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:OF/RC:C
NVDNVD · Deferred4.0Medium5.5CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.45% · top 60% of all CVEs (12 Nov 2026)
CISA SSVC
Exploitation: poc · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.9.

Affected products

  • PrefectHQ · prefect

    • affected 3.6.0
    • affected 3.6.1
    • affected 3.6.2
    • affected 3.6.3
    • affected 3.6.4
    • affected 3.6.5
    • affected 3.6.6
    • affected 3.6.7
    • affected 3.6.8
    • affected 3.6.9
    • affected 3.6.10
    • affected 3.6.11
    • affected 3.6.12
    • affected 3.6.13
    • affected 3.6.14
    • affected 3.6.15
    • affected 3.6.16
    • affected 3.6.17
    • affected 3.6.18
    • affected 3.6.19
    • affected 3.6.20
    • affected 3.6.21
    • unaffected 3.6.22

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References

References8

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .