CVE-2026-49822Public exploitNetwork attack vector

Cross-namespace event disclosure via unchecked watch target

Published Jun 10, 2026 · Updated Jun 10, 2026

Missing authorization in Fission before 1.24.0 allows remote authenticated users to read cross-namespace Kubernetes event data. The createKubernetesWatch path trusts the trigger's user-controlled namespace and uses a cluster-scoped service account to POST full Pod, Service and Job change events as JSON; update and patch requests also bypass its create-only webhook rule. Permission to create a KubernetesWatchTrigger in one namespace is sufficient to maintain a surveillance channel over another namespace without further privileges.

CVSS severity7.7
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authorization in Fission before 1.24.0 allows remote authenticated users to read cross-namespace Kubernetes event data. The createKubernetesWatch path trusts the trigger's user-controlled namespace and uses a cluster-scoped service account to POST full Pod, Service and Job change events as JSON; update and patch requests also bypass its create-only webhook rule. Permission to create a KubernetesWatchTrigger in one namespace is sufficient to maintain a surveillance channel over another namespace without further privileges.

The record

CVE
CVE-2026-49822
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
Fission
Product
Fission
Classifications
CWE-284, CWE-862, T1613
Attack vector
network
Privileges
authenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 1.24.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Fission · Fissionversion=< 1.24.0

Published CVSS scores

7.7GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-862Missing Authorization
T1613Container and Resource Discovery

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo