CVE-2026-90843

HIGHPre-NVD 8.38.3—
EchelonGraph scoreHIGH confidence

Score 8.3 from GitHub Security Advisory published 2026-09-15. a secondary CVSS source baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.3Exploit: Elevated riskExposed: 0

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

A security vulnerability has been detected in SabyasachiRana WebMap up to 8b95fe4dc301a3c09ddf145b895de0bf9f8d2a25. This affects the function nmap_newscan of the file functions_nmap.py of the component New Nmap Scan Handler. Such manipulation of the argument target/params leads to os command injection. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The name of the patch is 3d52f65803a2716bff14d938352c6fef45b0cfb6. A patch should be applied to remediate this issue. This issue got fixed with a silent patch.

CVSS v3
8.3
EG Score
8.3(high)
EG Risk
68(Attend)
EG Risk 68/100SSVC: 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
Severity83% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
71%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 16, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic
https://raw.githubusercontent.com/CalledSTRIKER/CalledSTRIKER-gitbook/refs/heads/main/security-research/2026-05-30_12-29.png
generic🟡 PoC Available

WebMap: CVE-2026-90843 | Striker Blog

https://calledstriker.gitbook.io/blog/security-research/webmap

Vendor Advisories for CVE-2026-90843(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 32× in last 7d / 32× 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. 2026-09-21 15:11 UTCGHSA enrichment
  2. 2026-09-21 02:11 UTCEG score recompute
  3. 2026-09-21 02:11 UTCGHSA enrichment
  4. 2026-09-20 20:16 UTCEPSS rescore
  5. 2026-09-20 13:10 UTCGHSA enrichment
  6. 2026-09-19 23:56 UTCEG score recompute
  7. 2026-09-19 23:56 UTCGHSA enrichment
  8. 2026-09-19 10:55 UTCGHSA enrichment
  9. 2026-09-18 21:55 UTCEG score recompute
  10. 2026-09-18 21:55 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 08:55 UTCGHSA enrichment
  13. 2026-09-17 19:54 UTCEG score recompute
  14. 2026-09-17 19:54 UTCGHSA enrichment
  15. 2026-09-17 19:32 UTCEPSS rescore
  16. 2026-09-17 06:51 UTCGHSA enrichment
  17. 2026-09-16 17:50 UTCEG score recompute
  18. 2026-09-16 17:50 UTCGHSA enrichment
  19. 2026-09-16 17:21 UTCNVD updateCVSS v4 → 5.5
  20. 2026-09-16 17:00 UTCEG score recompute
  21. 2026-09-16 17:00 UTCGHSA enrichment
  22. 2026-09-16 16:59 UTCMITRE cvelistV5CVSS v4 → 6.9
  23. 2026-09-16 14:09 UTCEPSS rescore
  24. 2026-09-16 05:15 UTCEPSS rescore
  25. 2026-09-16 03:55 UTCGHSA enrichment
Show 7 more
  1. 2026-09-15 14:53 UTCGHSA enrichment
  2. 2026-09-15 14:27 UTCEG score recompute
  3. 2026-09-15 14:27 UTCGHSA enrichment
  4. 2026-09-15 01:27 UTCEG score recompute
  5. 2026-09-15 01:27 UTCNVD updateCVSS v4 → 5.5
  6. 2026-09-15 00:45 UTCEG score recompute
  7. 2026-09-15 00:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90843?
CVE-2026-90843 is a high vulnerability published on September 15, 2026. A security vulnerability has been detected in SabyasachiRana WebMap up to 8b95fe4dc301a3c09ddf145b895de0bf9f8d2a25. This affects the function nmapnewscan of the file functionsnmap.py of the component New Nmap Scan Handler. Such manipulation of the argument target/params leads to os command…
When was CVE-2026-90843 disclosed?
CVE-2026-90843 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90843 actively exploited?
CVE-2026-90843 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 29.4% of all scored CVEs.
What is the CVSS score of CVE-2026-90843?
CVE-2026-90843 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-90843?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90843, 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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