CVE-2026-85513

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-09-04. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

GitHub - StackStorm/st2: StackStorm (aka "IFTTT for Ops") is event-driven automation for auto-remediation, incident responses, troubleshooting, deployments, and more for DevOps and SREs. Includes rules engine, workflow, 160 integration packs with 6000+ actions (see https://exchange.stackstorm.org) and ChatOps. Installer at https://docs.stackstorm.com/install/index.html · GitHub

https://github.com/StackStorm/st2/
generic

Execution User Impersonation Allows Cross-Account KV Secret Exfiltration (All Versions Including 3.9.0) · Issue #6379 · StackStorm/st2 · GitHub

https://github.com/StackStorm/st2/issues/6379

Vendor Advisories for CVE-2026-85513(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 19× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 22:13 UTCEG score recompute
  2. 2026-09-19 22:13 UTCGHSA enrichment
  3. 2026-09-18 21:55 UTCEG score recompute
  4. 2026-09-18 21:55 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-17 21:37 UTCEG score recompute
  7. 2026-09-17 21:37 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-16 21:19 UTCEG score recompute
  10. 2026-09-16 21:19 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 20:52 UTCEG score recompute
  14. 2026-09-15 20:52 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-14 20:07 UTCGHSA enrichment
  18. 2026-09-13 19:49 UTCEG score recompute
  19. 2026-09-13 19:49 UTCGHSA enrichment
  20. 2026-09-12 19:30 UTCEG score recompute
  21. 2026-09-12 19:30 UTCGHSA enrichment
  22. 2026-09-11 19:12 UTCEG score recompute
  23. 2026-09-11 19:12 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 24 more
  1. 2026-09-10 18:54 UTCEG score recompute
  2. 2026-09-10 18:54 UTCGHSA enrichment
  3. 2026-09-09 18:35 UTCEG score recompute
  4. 2026-09-09 18:35 UTCGHSA enrichment
  5. 2026-09-08 22:01 UTCEPSS rescore
  6. 2026-09-08 18:17 UTCEG score recompute
  7. 2026-09-08 18:17 UTCGHSA enrichment
  8. 2026-09-08 17:28 UTCNVD updateCVSS v4 → 2.1
  9. 2026-09-08 17:04 UTCEG score recompute
  10. 2026-09-08 17:03 UTCGHSA enrichment
  11. 2026-09-08 16:49 UTCMITRE cvelistV5CVSS v4 → 5.3
  12. 2026-09-08 16:22 UTCEG score recompute
  13. 2026-09-08 16:22 UTCGHSA enrichment
  14. 2026-09-07 14:44 UTCGHSA enrichment
  15. 2026-09-06 14:03 UTCEG score recompute
  16. 2026-09-06 14:03 UTCGHSA enrichment
  17. 2026-09-06 13:48 UTCEPSS rescore
  18. 2026-09-05 15:31 UTCEPSS rescore
  19. 2026-09-05 13:45 UTCEG score recompute
  20. 2026-09-05 13:45 UTCGHSA enrichment
  21. 2026-09-04 13:27 UTCEG score recompute
  22. 2026-09-04 13:24 UTCNVD updateCVSS v4 → 2.1
  23. 2026-09-04 12:45 UTCEG score recompute
  24. 2026-09-04 12:43 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85513?
CVE-2026-85513 is a medium vulnerability published on September 4, 2026. A weakness has been identified in StackStorm st2 up to 3.9.0. This issue affects the function assertuserisadminifuserqueryparamis_provided of the file st2api/st2api/controllers/v1/actionexecutions.py of the component NoOp RBAC backend. This manipulation of the argument User causes improper…
When was CVE-2026-85513 disclosed?
CVE-2026-85513 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85513 actively exploited?
CVE-2026-85513 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.5% of all scored CVEs.
What is the CVSS score of CVE-2026-85513?
CVE-2026-85513 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-85513?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85513, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-85513

Explore →

Is Your Infrastructure Affected by CVE-2026-85513?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs