CVE-2026-46614Network attack vector

Unauthenticated function invocation via public internal route

Published Jun 10, 2026 · Updated Jun 10, 2026

Missing authorization in Fission before 1.23.0 allows remote attackers to invoke functions through the public router without an HTTPTrigger. The router registers /fission-function/ and /fission-function// for every Function object on the public listener without checking for a corresponding trigger. Reachability to port 8888 and knowledge or discovery of a function name are sufficient to bypass host, path, and method restrictions, including across tenants.

CVSS severity9.8
Critical
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

Missing authorization in Fission before 1.23.0 allows remote attackers to invoke functions through the public router without an HTTPTrigger. The router registers /fission-function/ and /fission-function// for every Function object on the public listener without checking for a corresponding trigger. Reachability to port 8888 and knowledge or discovery of a function name are sufficient to bypass host, path, and method restrictions, including across tenants.

The record

CVE
CVE-2026-46614
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
Fission
Product
Fission
Classifications
CWE-862, CWE-284, T1190
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

9.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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-862Missing Authorization
CWE-284Improper Access Control
T1190Exploit Public-Facing Application

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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