# CVE-2021-39413: Cross-site scripting in n/a

> Attackers can inject malicious scripts via multiple parameters in SEO Panel, potentially leading to session hijacking or code execution.

- **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:** 5 Nov 2021
- **Updated:** 4 Aug 2024
- **Also known as:** BIT-seopanel-2021-39413, GHSA-r7w6-6jpr-2hm2

## What is CVE-2021-39413?

CVE-2021-39413 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Nov 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

Multiple Cross Site Scripting (XSS) vulnerabilities exits in SEO Panel v4.8.0 via the (1) to_time parameter in (a) backlinks.php, (b) analytics.php, (c) log.php, (d) overview.php, (e) pagespeed.php, (f) rank.php, (g) review.php, (h) saturationchecker.php, (i) social_media.php, and (j) reports.php; the (2) from_time parameter in (a) backlinks.php, (b) analytics.php, (c) log.php, (d) overview.php, (e) pagespeed.php, (f) rank.php, (g) review.php, (h) saturationchecker.php, (i) social_media.php, (j) webmaster-tools.php, and (k) reports.php; the (3) order_col parameter in (a) analytics.php, (b) review.php, (c) social_media.php, and (d) webmaster-tools.php; and the (4) pageno parameter in (a) alerts.php, (b) log.php, (c) keywords.php, (d) proxy.php, (e) searchengine.php, and (f) siteauditor.php.

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

## Which versions are affected by CVE-2021-39413?

1 open source package ship an affected version, including seopanel. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `seopanel` | Bitnami | From 4.8.0 to 4.8.0 | None |

Products: Seopanel Seo Panel.

## How do I fix CVE-2021-39413?

No fix has been published for CVE-2021-39413 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-39413 being exploited?

There is no known exploitation of CVE-2021-39413 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-10839](https://insights.sbomify.com/CVE-2017-10839/): SQL injection in SEO Panel (high 8.8)
- [CVE-2025-29451](https://insights.sbomify.com/CVE-2025-29451/): Server-side request forgery in n/a (high 7.6)
- [CVE-2025-29452](https://insights.sbomify.com/CVE-2025-29452/): Server-side request forgery in n/a (high 7.6)
- [CVE-2021-34117](https://insights.sbomify.com/CVE-2021-34117/): SQL injection in n/a (high 7.5)
- [CVE-2021-28419](https://insights.sbomify.com/CVE-2021-28419/): SQL injection in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-39413 and fix it if it is affected.

What it is: CVE-2021-39413 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Nov 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-2021-39413 in the wild and no public exploit code.

Affected packages and fixed versions:
- seopanel (Bitnami): affected from 4.8.0 up to 4.8.0; 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-2021-39413/ (Markdown: https://insights.sbomify.com/CVE-2021-39413/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-39413
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-39413
- OSV: https://osv.dev/vulnerability/CVE-2021-39413

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-39413/
Summaries are generated and may contain mistakes; the official description above is the record.