CVE-2026-55563Network attack vector

Cloud credential theft via persistent approval labels

Published Sep 21, 2026 · Updated Sep 21, 2026

Incorrect authorization in Feast before 0.65.0 allows remote authenticated users to execute code in privileged integration-test jobs. The pull_request_target workflow retains approval labels after new commits, then checks out the changed fork merge ref and runs its make targets with cloud secrets in scope. Exploitation requires a labeled fork pull request followed by a malicious update, exposing runner execution and GCP, AWS, and Snowflake credentials.

CVSS severity8.9
High
EPSS probability0.50%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Feast before 0.65.0 allows remote authenticated users to execute code in privileged integration-test jobs. The pull_request_target workflow retains approval labels after new commits, then checks out the changed fork merge ref and runs its make targets with cloud secrets in scope. Exploitation requires a labeled fork pull request followed by a malicious update, exposing runner execution and GCP, AWS, and Snowflake credentials.

The record

CVE
CVE-2026-55563
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
Feast
Product
Feast
Classifications
CWE-863, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.65.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Feast · Feastversion=< 0.65.0

Published CVSS scores

8.9GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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