CVE-2026-47716Network attack vector

Cross-project issue modification via unscoped bulk actions

Published May 26, 2026 · Updated May 26, 2026

Authorization bypass in Bugsink before 2.2.0 allows remote authenticated users to modify issue states across project boundaries. The issue-list bulk-action view authorizes the project named in the URL, then applies actions to submitted issue UUIDs without verifying project ownership. Exploitation requires membership in one project and prior knowledge of a valid UUID from another; it changes only that issue's state and does not cross hosted tenant instances.

CVSS severity3.1
Low
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Bugsink before 2.2.0 allows remote authenticated users to modify issue states across project boundaries. The issue-list bulk-action view authorizes the project named in the URL, then applies actions to submitted issue UUIDs without verifying project ownership. Exploitation requires membership in one project and prior knowledge of a valid UUID from another; it changes only that issue's state and does not cross hosted tenant instances.

The record

CVE
CVE-2026-47716
Published
May 26, 2026
Updated
May 26, 2026
Vendor
Bugsink
Product
Bugsink
Classifications
CWE-639, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2026CVE publishedPublication date reported by the CVE source.
  2. May 26, 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=< 2.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Bugsink · Bugsinkversion=< 2.2.0

Published CVSS scores

3.1GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1565.001Stored Data Manipulation

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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