# CVE-2026-75531: Stored Cross-Site Scripting in URL Observables via Lookyloo Submission Handler in Pandora

> Attackers can inject malicious scripts via URL observables in Pandora, potentially hijacking user sessions or stealing data when victims interact with submission controls.

- **Severity:** High 7.0 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Aug 2026
- **Updated:** 18 Aug 2026

## What is CVE-2026-75531?

CVE-2026-75531 is a high-severity cross-site scripting vulnerability in pandora-analysis pandora, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Pandora contains a stored cross-site scripting (XSS) vulnerability in the rendering of URL observables. A URL extracted from or associated with an analyzed file was inserted directly into the inline JavaScript onclick handler used by the Submit to Lookyloo action.

Although the value was subject to HTML escaping by the template engine, it was embedded inside a JavaScript string within an HTML attribute. An attacker-controlled URL containing specially crafted characters could therefore break out of the JavaScript string and inject arbitrary JavaScript code.

The malicious script would execute in the context of the Pandora web application when a victim interacts with the affected Submit to Lookyloo control. Successful exploitation could allow an attacker to access information available to the victim's browser or perform actions using the victim's authenticated Pandora session.

The patch removes the observable value from the inline JavaScript handler. The URL is instead stored in an HTML data-url attribute and retrieved through the DOM dataset API when needed. Additional uses of innerHTML were also replaced with textContent as defensive hardening.

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

## Which versions are affected by CVE-2026-75531?


## How do I fix CVE-2026-75531?

No fix has been published for CVE-2026-75531 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-75531 being exploited?

There is no known exploitation of CVE-2026-75531 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-75531 and fix it if it is affected.

What it is: CVE-2026-75531 is a high-severity cross-site scripting vulnerability in pandora-analysis pandora, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-75531 in the wild and no public exploit code.

Affected product: pandora-analysis pandora. 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-2026-75531/ (Markdown: https://insights.sbomify.com/CVE-2026-75531/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-75531
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-75531
- OSV: https://osv.dev/vulnerability/CVE-2026-75531

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-75531/
Summaries are generated and may contain mistakes; the official description above is the record.