# CVE-2026-48923: Jenkins AppSpider Plugin does not perform a permission check in a method implementing form validation

> Attackers with Read permission can trigger Server-Side Request Forgery via form validation, bypassing security controls to access internal resources.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 27 May 2026
- **Updated:** 27 May 2026
- **Also known as:** GHSA-9wm7-8qf3-9v98

## What is CVE-2026-48923?

CVE-2026-48923 is a medium-severity server-side request forgery vulnerability in Jenkins AppSpider Plugin, published on 27 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Jenkins AppSpider Plugin 1.0.17 and earlier does not perform a permission check in a method implementing form validation, allowing attackers with Overall/Read permission to connect to an attacker-specified URL.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2026-48923?

2 open source packages ship an affected version, including com.rapid7:jenkinsci-appspider-plugin. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `com.rapid7:jenkinsci-appspider-plugin` | Maven | All versions | 1.0.18 |
| `com.rapid7:jenkinsci-appspider-plugin` | Maven | All versions | 1.0.18 |

Products: Jenkins Appspider.

## How do I fix CVE-2026-48923?

Upgrade com.rapid7:jenkinsci-appspider-plugin to 1.0.18 or later.

## Is CVE-2026-48923 being exploited?

There is no known exploitation of CVE-2026-48923 in the wild and no public exploit code.

## Other vulnerabilities in Jenkins AppSpider Plugin

- [CVE-2023-32998](https://insights.sbomify.com/CVE-2023-32998/): Jenkins AppSpider Plugin Cross-Site Request Forgery vulnerability (high 8.8)
- [CVE-2020-2314](https://insights.sbomify.com/CVE-2020-2314/): Password stored in plain text by Jenkins AppSpider Plugin (medium 5.5)
- [CVE-2024-28155](https://insights.sbomify.com/CVE-2024-28155/): Jenkins AppSpider Plugin missing permission checks (medium 4.3)
- [CVE-2023-32999](https://insights.sbomify.com/CVE-2023-32999/): Jenkins AppSpider Plugin missing permission check (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-48923 and fix it if it is affected.

What it is: CVE-2026-48923 is a medium-severity server-side request forgery vulnerability in Jenkins AppSpider Plugin, published on 27 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-48923 in the wild and no public exploit code.

Affected packages and fixed versions:
- com.rapid7:jenkinsci-appspider-plugin (Maven): affected all versions; fixed in 1.0.18
- com.rapid7:jenkinsci-appspider-plugin (Maven): affected all versions; fixed in 1.0.18

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-2026-48923/ (Markdown: https://insights.sbomify.com/CVE-2026-48923/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-48923
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-48923
- OSV: https://osv.dev/vulnerability/CVE-2026-48923

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-48923/
Summaries are generated and may contain mistakes; the official description above is the record.