# CVE-2021-44116: Cross-site Scripting in Anchor CMS

> Attackers can inject malicious scripts via post content to steal administrator cookies and compromise the Anchor CMS account.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A: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:** 15 Dec 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-7mq6-cp5m-f4j5

## What is CVE-2021-44116?

CVE-2021-44116 is a medium-severity cross-site scripting vulnerability in n/a, published on 15 Dec 2021. 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

Cross Site Scripting (XSS) vulnerability exits in Anchor CMS <=0.12.7 in posts.php. Attackers can use the posts column to upload the title and content containing malicious code to achieve the purpose of obtaining the administrator cookie, thereby achieving other malicious operations.

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

## Which versions are affected by CVE-2021-44116?

2 open source packages ship an affected version, including anchorcms/anchor-cms. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `anchorcms/anchor-cms` | Packagist | All versions to 0.12.7 | None |
| `anchorcms/anchor-cms` | Packagist | All versions to 0.12.7 | None |

Products: Anchorcms Anchor Cms.

## How do I fix CVE-2021-44116?

No fix has been published for CVE-2021-44116 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-44116 being exploited?

There is no known exploitation of CVE-2021-44116 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2024-37732](https://insights.sbomify.com/CVE-2024-37732/): Cross-site scripting in n/a (high 8.8)
- [CVE-2020-23342](https://insights.sbomify.com/CVE-2020-23342/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2015-5687](https://insights.sbomify.com/CVE-2015-5687/): Deserialization in n/a (high 7.5)
- [CVE-2024-29499](https://insights.sbomify.com/CVE-2024-29499/): Cross-Site Request Forgery in Anchor CMS (high 7.4)
- [CVE-2015-5060](https://insights.sbomify.com/CVE-2015-5060/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-44116 and fix it if it is affected.

What it is: CVE-2021-44116 is a medium-severity cross-site scripting vulnerability in n/a, published on 15 Dec 2021. 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-2021-44116 in the wild and no public exploit code.

Affected packages and fixed versions:
- anchorcms/anchor-cms (Packagist): affected all versions up to 0.12.7; no fix listed
- anchorcms/anchor-cms (Packagist): affected all versions up to 0.12.7; no fix listed

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-2021-44116/ (Markdown: https://insights.sbomify.com/CVE-2021-44116/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-44116
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-44116
- OSV: https://osv.dev/vulnerability/CVE-2021-44116

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-44116/
Summaries are generated and may contain mistakes; the official description above is the record.