# CVE-2026-90843: SabyasachiRana WebMap New Nmap Scan functions_nmap.py nmap_newscan os command injection

> Remote attackers can execute arbitrary OS commands via the nmap_newscan function in WebMap, requiring a patch to remediate.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Sep 2026
- **Updated:** 2 Oct 2026
- **Also known as:** GHSA-pp25-fxhh-fhqj

## What is CVE-2026-90843?

CVE-2026-90843 is a medium-severity command injection vulnerability in SabyasachiRana WebMap, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-90843?


## How do I fix CVE-2026-90843?

No fix has been published for CVE-2026-90843 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-90843 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90843 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90843 and fix it if it is affected.

What it is: CVE-2026-90843 is a medium-severity command injection vulnerability in SabyasachiRana WebMap, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90843 exists.

Affected product: SabyasachiRana WebMap. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-90843/ (Markdown: https://insights.sbomify.com/CVE-2026-90843/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90843
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90843
- OSV: https://osv.dev/vulnerability/CVE-2026-90843

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-90843/
Summaries are generated and may contain mistakes; the official description above is the record.