CVE-2020-12286Network attack vector

Cross-tenant task disclosure via unscoped TaskView permission

Published Apr 28, 2020 · Updated Aug 4, 2024

Incorrect authorization in Octopus Server before 2019.12.9 and 2020 before 2020.1.12 allows remote authenticated users to view cross-tenant tasks. The TaskView permission is evaluated without project, environment, or tenant dimensions, so task listings ignore the account's assigned scope. Any authenticated account with TaskView can read server-task details outside its tenant boundary; no task modification or service interruption is reported.

CVSS severity4.3
Medium
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Octopus Server before 2019.12.9 and 2020 before 2020.1.12 allows remote authenticated users to view cross-tenant tasks. The TaskView permission is evaluated without project, environment, or tenant dimensions, so task listings ignore the account's assigned scope. Any authenticated account with TaskView can read server-task details outside its tenant boundary; no task modification or service interruption is reported.

The record

CVE
CVE-2020-12286
Published
Apr 28, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 28, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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 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

T1213Data from Information Repositories

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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