# CVE-2026-32986: Textpattern CMS 4.9.0: Second-Order XSS via Atom Feed Injection

> Attackers can inject malicious scripts via Atom feed elements, leading to code execution when feeds are consumed by readers or aggregators.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/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:** 20 Mar 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-9j95-2mq7-rc9w

## What is CVE-2026-32986?

CVE-2026-32986 is a medium-severity cross-site scripting vulnerability in Textpattern CMS, published on 20 Mar 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

Textpattern CMS version 4.9.0 contains a second-order cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting improper sanitization of user-supplied input in Atom feed XML elements. Attackers can embed unescaped payloads in parameters such as category that are reflected into Atom fields like  and , which execute as JavaScript when feed readers or CMS aggregators consume the feed and insert content into the DOM using unsafe methods.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-116 (Improper Encoding or Escaping of Output)

## Which versions are affected by CVE-2026-32986?

It affects 1 product.


Products: Textpattern Textpattern.

## How do I fix CVE-2026-32986?

No fix has been published for CVE-2026-32986 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-32986 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32986 exists.

## Other vulnerabilities in Textpattern CMS

- [CVE-2020-19510](https://insights.sbomify.com/CVE-2020-19510/): File upload in n/a (critical 9.8)
- [CVE-2018-7474](https://insights.sbomify.com/CVE-2018-7474/): SQL injection in n/a (critical 9.8)
- [CVE-2023-50038](https://insights.sbomify.com/CVE-2023-50038/): File upload in n/a (high 8.8)
- [CVE-2023-24269](https://insights.sbomify.com/CVE-2023-24269/): File upload in n/a (high 8.8)
- [CVE-2020-29458](https://insights.sbomify.com/CVE-2020-29458/): Cross-site request forgery in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-32986 and fix it if it is affected.

What it is: CVE-2026-32986 is a medium-severity cross-site scripting vulnerability in Textpattern CMS, published on 20 Mar 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32986 exists.

Affected product: Textpattern CMS. 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-2026-32986/ (Markdown: https://insights.sbomify.com/CVE-2026-32986/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-32986
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-32986
- OSV: https://osv.dev/vulnerability/CVE-2026-32986

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-32986/
Summaries are generated and may contain mistakes; the official description above is the record.