# CVE-2026-4313: Stored XSS in AdaptiveGRC

> Authenticated attackers can inject malicious scripts into text fields, leading to arbitrary JavaScript execution and potential administrative privilege escalation.

- **Severity:** Low 2.4 (`CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 24 Apr 2026
- **Updated:** 24 Apr 2026
- **Also known as:** GHSA-r3x8-5j74-9fg2

## What is CVE-2026-4313?

CVE-2026-4313 is a low-severity cross-site scripting vulnerability in C&F AdaptiveGRC, published on 24 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

AdaptiveGRC is vulnerable to Stored XSS via text type fields across the forms. Authenticated attacker can replace the value of the text field in the HTTP POST request. Improper parameter validation by the server results in arbitrary JavaScript execution in the victim's browser.
Critically, this may allow the attacker to obtain the administrator authentication token and perform arbitrary actions with administrative privileges, which could lead to further compromise.

This issue occurs in versions released before December 2025.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-4313?


## How do I fix CVE-2026-4313?

No fix has been published for CVE-2026-4313 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4313 being exploited?

There is no known exploitation of CVE-2026-4313 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4313 and fix it if it is affected.

What it is: CVE-2026-4313 is a low-severity cross-site scripting vulnerability in C&F AdaptiveGRC, published on 24 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-4313 in the wild and no public exploit code.

Affected product: C&F AdaptiveGRC. 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-2026-4313/ (Markdown: https://insights.sbomify.com/CVE-2026-4313/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4313
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4313
- OSV: https://osv.dev/vulnerability/CVE-2026-4313

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-4313/
Summaries are generated and may contain mistakes; the official description above is the record.