CVE-2026-86183

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-06. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

A vulnerability was identified in diem-project diem up to 5.1.3. This vulnerability affects unknown code of the file dmFrontPlugin/modules/dmWidget/lib/BasedmWidgetActions.class.php of the component dmWidget. Such manipulation of the argument widget_id leads to authorization bypass. The attack may be launched remotely. The exploit is publicly available and might be used. The name of the patch is 116974edfb9a5b8bd69cb13586dc62bcdbb485ad. A patch should be applied to remediate this issue. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

September 6, 2026

Last Modified

September 11, 2026

Advisory Details (2)

Auto-updated Sep 6, 2026
No patch confirmed yet.
generic

GitHub - diem-project/diem: Diem CMF CMS for symfony 1.4 · GitHub

https://github.com/diem-project/diem/
generic

Public `dmWidget` endpoints bypass page access controls by widget ID · Issue #450 · diem-project/diem · GitHub

https://github.com/diem-project/diem/issues/450

Vendor Advisories for CVE-2026-86183(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 20× in last 7d / 45× 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. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 05:04 UTCEG score recompute
  3. 2026-09-20 05:04 UTCGHSA enrichment
  4. 2026-09-19 04:06 UTCEG score recompute
  5. 2026-09-19 04:06 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 03:09 UTCEG score recompute
  8. 2026-09-18 03:09 UTCGHSA enrichment
  9. 2026-09-17 19:32 UTCEPSS rescore
  10. 2026-09-17 02:12 UTCEG score recompute
  11. 2026-09-17 02:12 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 01:14 UTCEG score recompute
  15. 2026-09-16 01:14 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 00:16 UTCGHSA enrichment
  19. 2026-09-13 23:18 UTCEG score recompute
  20. 2026-09-13 23:18 UTCGHSA enrichment
  21. 2026-09-12 22:21 UTCEG score recompute
  22. 2026-09-12 22:21 UTCGHSA enrichment
  23. 2026-09-11 21:24 UTCEG score recompute
  24. 2026-09-11 21:24 UTCGHSA enrichment
  25. 2026-09-11 21:20 UTCNVD updateCVSS v4 → 5.5
Show 20 more
  1. 2026-09-11 20:47 UTCEG score recompute
  2. 2026-09-11 20:47 UTCGHSA enrichment
  3. 2026-09-11 20:43 UTCMITRE cvelistV5CVSS v4 → 6.9
  4. 2026-09-11 17:25 UTCEG score recompute
  5. 2026-09-11 17:25 UTCGHSA enrichment
  6. 2026-09-10 16:15 UTCEG score recompute
  7. 2026-09-10 16:15 UTCGHSA enrichment
  8. 2026-09-09 15:11 UTCEG score recompute
  9. 2026-09-09 15:11 UTCGHSA enrichment
  10. 2026-09-08 22:01 UTCEPSS rescore
  11. 2026-09-08 14:13 UTCGHSA enrichment
  12. 2026-09-08 11:19 UTCEG score recompute
  13. 2026-09-08 11:19 UTCGHSA enrichment
  14. 2026-09-07 10:21 UTCEG score recompute
  15. 2026-09-07 10:20 UTCGHSA enrichment
  16. 2026-09-06 13:48 UTCEPSS rescore
  17. 2026-09-06 09:21 UTCEG score recompute
  18. 2026-09-06 09:21 UTCNVD updateCVSS v4 → 5.5
  19. 2026-09-06 09:07 UTCEG score recompute
  20. 2026-09-06 09:04 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86183?
CVE-2026-86183 is a medium vulnerability published on September 6, 2026. A vulnerability was identified in diem-project diem up to 5.1.3. This vulnerability affects unknown code of the file dmFrontPlugin/modules/dmWidget/lib/BasedmWidgetActions.class.php of the component dmWidget. Such manipulation of the argument widget_id leads to authorization bypass. The attack may…
When was CVE-2026-86183 disclosed?
CVE-2026-86183 was first published in the National Vulnerability Database on September 6, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86183 actively exploited?
CVE-2026-86183 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 73.1% of all scored CVEs.
What is the CVSS score of CVE-2026-86183?
CVE-2026-86183 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-86183?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86183, 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

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