# CVE-2024-29921: WordPress Photo Gallery by Supsystic plugin <= 1.15.16 - Cross Site Scripting (XSS) vulnerability

> An attacker can inject malicious scripts into the Photo Gallery by Supsystic plugin, potentially compromising user sessions or site integrity.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L`)
- **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:** 27 Mar 2024
- **Updated:** 11 May 2026
- **Also known as:** GHSA-fx8f-q2j4-9jxv

## What is CVE-2024-29921?

CVE-2024-29921 is a medium-severity cross-site scripting vulnerability in Photo Gallery by Supsystic, published on 27 Mar 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in supsystic Photo Gallery by Supsystic gallery-by-supsystic.This issue affects Photo Gallery by Supsystic: from n/a through <= 1.15.16.

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

## Which versions are affected by CVE-2024-29921?

It affects 1 product.


Products: Supsystic Photo Gallery.

## How do I fix CVE-2024-29921?

No fix has been published for CVE-2024-29921 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-29921 being exploited?

There is no known exploitation of CVE-2024-29921 in the wild and no public exploit code.

## Other vulnerabilities in Photo Gallery by Supsystic

- [CVE-2016-10918](https://insights.sbomify.com/CVE-2016-10918/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2021-36891](https://insights.sbomify.com/CVE-2021-36891/): Cross-site request forgery in Photo Gallery by Supsystic (WordPress plugin) (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-29921 and fix it if it is affected.

What it is: CVE-2024-29921 is a medium-severity cross-site scripting vulnerability in Photo Gallery by Supsystic, published on 27 Mar 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-29921 in the wild and no public exploit code.

Affected product: Photo Gallery by Supsystic. 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-2024-29921/ (Markdown: https://insights.sbomify.com/CVE-2024-29921/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-29921
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-29921
- OSV: https://osv.dev/vulnerability/CVE-2024-29921

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-29921/
Summaries are generated and may contain mistakes; the official description above is the record.