CVE-2026-46617Network attack vector

Namespace secret disclosure via automounted service-account token

Published Jun 10, 2026 · Updated Jun 10, 2026

Privilege management flaw in Fission before 1.23.0 allows remote attackers to read namespace secrets through deployed function code. The pool-manager and new-deploy builders assign fission-fetcher to runtime pods, so Kubernetes mounts its namespace-wide token in the untrusted function container. Creating or updating a function is required, and the inherited access covers secrets and configmaps readable by that service account.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege management flaw in Fission before 1.23.0 allows remote attackers to read namespace secrets through deployed function code. The pool-manager and new-deploy builders assign fission-fetcher to runtime pods, so Kubernetes mounts its namespace-wide token in the untrusted function container. Creating or updating a function is required, and the inherited access covers secrets and configmaps readable by that service account.

The record

CVE
CVE-2026-46617
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
Fission
Product
Fission
Classifications
CWE-538, CWE-269, CWE-250, T1552.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 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=< 1.23.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Fission · Fissionversion=< 1.23.0

Published CVSS scores

7.5GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-538Insertion of Sensitive Information into Externally-Accessible File or Directory
CWE-269Improper Privilege Management
CWE-250Execution with Unnecessary Privileges
T1552.007Unsecured Credentials: Container API

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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