# CVE-2017-20248: WordPress Plugin Apptha Slider Gallery 1.0 Path Traversal File Download

> Unauthenticated attackers can download arbitrary files from the server by manipulating the imgname parameter in the Apptha Slider Gallery WordPress plugin.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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:** Not needed
- **Fix available:** No
- **Published:** 9 Jun 2026
- **Updated:** 9 Jun 2026
- **Also known as:** GHSA-4c9c-6hj9-gqpq

## What is CVE-2017-20248?

CVE-2017-20248 is a high-severity path traversal vulnerability in Apptha Slider Gallery, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Apptha Slider Gallery 1.0 contains a path traversal vulnerability that allows unauthenticated attackers to download arbitrary files by manipulating the imgname parameter. Attackers can send requests to asgallDownload.php with directory traversal sequences ../ to access sensitive files outside the intended directory.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2017-20248?


## How do I fix CVE-2017-20248?

No fix has been published for CVE-2017-20248 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-20248 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20248 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-20248 and fix it if it is affected.

What it is: CVE-2017-20248 is a high-severity path traversal vulnerability in Apptha Slider Gallery, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20248 exists.

Affected product: Apptha Slider Gallery. 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-2017-20248/ (Markdown: https://insights.sbomify.com/CVE-2017-20248/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-20248
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-20248
- OSV: https://osv.dev/vulnerability/CVE-2017-20248

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-20248/
Summaries are generated and may contain mistakes; the official description above is the record.