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CVE-2026-85513— StackStorm st2 NoOp RBAC backend actionexecutions.py privileges management

Quick assessment

Affected
StackStorm st2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

StackStorm st2是StackStorm组织的一款事件驱动的运维自动化平台。 StackStorm st2 3.9.0及之前版本存在权限许可和访问控制问题漏洞，该漏洞源于st2api/st2api/controllers/v1/actionexecutions.py文件中NoOp RBAC backend组件的assert_user_is_admin_if_user_query_param_is_provided函数对User参数操作不当，导致权限管理不当，可能允许远程攻击者利用公开漏洞进行攻击

CVSS 6.3 · Medium EPSS 0.43% · P37

Affected Version Matrix 10

VendorProduct Version RangeStatus
StackStorm st2 3.0 affected
3.1 affected
3.2 affected
3.3 affected
3.4 affected
3.5 affected
3.6 affected
3.7 affected
… +2 more rows
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I. Basic Information for CVE-2026-85513

Vulnerability Information
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Vulnerability Title
StackStorm st2 NoOp RBAC backend actionexecutions.py privileges management
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in StackStorm st2 up to 3.9.0. This issue affects the function assert_user_is_admin_if_user_query_param_is_provided of the file st2api/st2api/controllers/v1/actionexecutions.py of the component NoOp RBAC backend. This manipulation of the argument User causes improper privilege management. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. Prior advisory CVE-2022-44009 was reported as a follow-up on the same sink, but this issue is distinct: it needs no Jinja RBAC und affects default install with RBAC disabled. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
StackStorm st2 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
StackStorm st2是StackStorm组织的一款事件驱动的运维自动化平台。 StackStorm st2 3.9.0及之前版本存在权限许可和访问控制问题漏洞，该漏洞源于st2api/st2api/controllers/v1/actionexecutions.py文件中NoOp RBAC backend组件的assert_user_is_admin_if_user_query_param_is_provided函数对User参数操作不当，导致权限管理不当，可能允许远程攻击者利用公开漏洞进行攻击
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
StackStorm st2 3.0 cpe:2.3:a:stackstorm:st2:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-85513

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III. Intelligence Information for CVE-2026-85513

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Vendor Advisories for CVE-2026-85513 (2)

Vendor Pages for CVE-2026-85513 (1)

Other References for CVE-2026-85513 (2)

IV. Related Vulnerabilities

Same product: st2
Same vendor: StackStorm
Same weakness: CWE-269