What is CVE-2026-90843?

CVE-2026-90843 is a high-severity vulnerability in Sabyasachirana Webmap, classified under Command Injection. CVSS score: 8.3/10. Published 2026-09-15.

How severe is CVE-2026-90843?

High severity. CVSS v3 base score is 8.3 out of 10.

RCE in Sabyasachirana Webmap

CVE-2026-90843

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.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-09-15 · last modified 2026-09-16.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.022 (82.3th percentile), scored 2026-10-30.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Sabyasachirana Webmap — versions 8b95fe4dc301a3c09ddf145b895de0bf9f8d2a25

Weakness classification (CWE)

References

VDB-403395 | SabyasachiRana WebMap New Nmap Scan functions_nmap.py nmap_newscan os command injection (technical-description, vdb-entry)
VDB-403395 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
CVE-2026-90843 | CVE Analysis and Report (third-party-advisory)
Submit #925586 | WebMap 8b95fe4dc301a3c09ddf145b895de0bf9f8d2a25 (CWE-78,CWE-306): OS Command Injection + Missing Authentication (third-party-advisory)
calledstriker.gitbook.io/blog/security-research/webmap (exploit)
raw.githubusercontent.com/CalledSTRIKER/CalledSTRIKER-gitbook/refs/heads/main/s… (related)
github.com/SabyasachiRana/WebMap/commit/3d52f65803a2716bff14d938352c6fef45b0cfb6 (patch, broken-link)
github.com/SabyasachiRana/WebMap/ (product, broken-link)

Frequently asked questions

What is CVE-2026-90843?: CVE-2026-90843 is a high-severity vulnerability in Sabyasachirana Webmap, classified under Command Injection. CVSS score: 8.3/10. Published 2026-09-15.
How severe is CVE-2026-90843?: High severity. CVSS v3 base score is 8.3 out of 10.