# CVE-2026-85293: InvoicePlane: Stored Cross-Site Scripting (XSS) via Client Email in Invoice and Quote Mailer Forms

> An attacker with admin access can inject JavaScript via client email fields, leading to session hijacking when other admins view mailer forms.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 25 Sep 2026
- **Updated:** 25 Sep 2026
- **Also known as:** GHSA-477r-xmgc-vcvj

## What is CVE-2026-85293?

CVE-2026-85293 is a medium-severity cross-site scripting vulnerability in InvoicePlane, published on 25 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. In version 1.7.2-beta-1, InvoicePlane stores client_email values without enforcing email syntax and renders them unescaped inside double-quoted value attributes in the invoice mailer form and quote mailer form. An administrator who can edit a client can store attribute-breaking input, and, when the mailer is configured, JavaScript executes when another authenticated administrator opens the related mailer page. The script runs in the InvoicePlane origin and can perform same-origin actions with the victim's session. This issue is fixed in version 1.7.2.

Weakness: CWE-87 (Improper Neutralization of Alternate XSS Syntax), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-85293?


## How do I fix CVE-2026-85293?

No fix has been published for CVE-2026-85293 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-85293 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85293 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-85293 and fix it if it is affected.

What it is: CVE-2026-85293 is a medium-severity cross-site scripting vulnerability in InvoicePlane, published on 25 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85293 exists.

Affected product: InvoicePlane. 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-2026-85293/ (Markdown: https://insights.sbomify.com/CVE-2026-85293/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-85293
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-85293
- OSV: https://osv.dev/vulnerability/CVE-2026-85293

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-85293/
Summaries are generated and may contain mistakes; the official description above is the record.