Octopus Deploy Octopus Server up to 2026.1.11724/2026.2.13343/2026.3.11815 Script Execution permission

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k2.67+

Summaryinfo

A vulnerability, which was classified as critical, has been found in Octopus Deploy Octopus Server up to 2026.1.11724/2026.2.13343/2026.3.11815. The affected element is an unknown function of the component Script Execution. The manipulation leads to permission. This vulnerability is traded as CVE-2026-91778. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Octopus Deploy Octopus Server up to 2026.1.11724/2026.2.13343/2026.3.11815 and classified as critical. This issue affects an unknown functionality of the component Script Execution. The manipulation with an unknown input leads to a permission vulnerability. Using CWE to declare the problem leads to CWE-275. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In affected versions of Octopus Server, users with certain scoped permission sets could execute arbitrary scripts on a worker (including the Octopus Server built-in worker). Incorrect permission validation during script execution would allow the script to execute without the user possessing the required authorisation.

The advisory is shared at advisories.octopus.com. The identification of this vulnerability is CVE-2026-91778 since 09/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1222 for this issue.

Upgrading to version 2026.1.11725, 2026.2.13344 or 2026.3.11816 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Permission
CWE: CWE-275 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Octopus Server 2026.1.11725/2026.2.13344/2026.3.11816

Timelineinfo

09/15/2026 Advisory disclosed
09/15/2026 +0 days CVE reserved
09/15/2026 +0 days VulDB entry created
09/15/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: advisories.octopus.com
Status: Confirmed

CVE: CVE-2026-91778 (🔒)
GCVE (CVE): GCVE-0-2026-91778
GCVE (VulDB): GCVE-100-404069

Entryinfo

Created: 09/15/2026 09:44
Changes: 09/15/2026 09:44 (66)
Complete: 🔍
Cache ID: 216::103

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