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CVE-2026-855136.3MediumCWE-266

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

StackStorm · st2

Affected: StackStorm st2 · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.4%probability of exploitation in the next 30 days
37th percentile
050100

Higher than 37% of scored CVEs

6.3MediumCVSS 3.1
LowMedium

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

  • StackStorm · st23.0; 3.1; 3.2; 3.3; 3.4; 3.5 and 4 more

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas
Exploitation
Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV
Not listed
Public check
No public nuclei template

CoverageNo articles yet

No CyberSIXT article names CVE-2026-85513 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References