# CVE-2026-35516: LinkAce has SSRF via CheckLinksCommand - Link URL Update Bypasses laravel-html-meta Protection

> Authenticated users can exploit SSRF in LinkAce to access internal services and cloud metadata by bypassing IP restrictions during link updates.

- **Severity:** Medium 5.0 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/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:** No
- **Published:** 7 Apr 2026
- **Updated:** 9 Apr 2026
- **Also known as:** GHSA-4jhm-r4f5-p7xm

## What is CVE-2026-35516?

CVE-2026-35516 is a medium-severity server-side request forgery vulnerability in Kovah LinkAce, published on 7 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

LinkAce is a self-hosted archive to collect website links. Prior to 2.5.4, LinkRepository::update and CheckLinksCommand::checkLink do not check for private IPs. An authenticated user can read responses from internal services (AWS IMDSv1, cloud metadata, internal APIs) by creating a link with a public URL and then updating it to a private IP. The links:check cron job makes the request server-side without IP filtering. This can expose cloud credentials, internal service data, and network topology. This vulnerability is fixed in 2.5.4.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-35516?

It affects 1 product.


Products: Linkace Linkace.

## How do I fix CVE-2026-35516?

No fix has been published for CVE-2026-35516 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-35516 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35516 exists.

## Other vulnerabilities in Kovah LinkAce

- [CVE-2026-27458](https://insights.sbomify.com/CVE-2026-27458/): LinkAce: Stored XSS in Atom Feed via CDATA Escape in List Description (high 8.7)
- [CVE-2025-62722](https://insights.sbomify.com/CVE-2025-62722/): LinkAce: Stored XSS Vulnerability in Link Title Field Through Social Media Sharing Feature (high 8.7)
- [CVE-2026-33953](https://insights.sbomify.com/CVE-2026-33953/): LinkAce's SSRF protection can be bypassed via internal hostname resolution in LinkAce (high 8.5)
- [CVE-2025-53838](https://insights.sbomify.com/CVE-2025-53838/): LinkAce has a Stored One Click XSS vulnerability (high 8.4)
- [CVE-2026-30953](https://insights.sbomify.com/CVE-2026-30953/): LinkAce affected by SSRF via link creation: NoPrivateIpRule not applied to LinkStoreRequest (high 7.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-35516 and fix it if it is affected.

What it is: CVE-2026-35516 is a medium-severity server-side request forgery vulnerability in Kovah LinkAce, published on 7 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35516 exists.

Affected product: Kovah LinkAce. 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-2026-35516/ (Markdown: https://insights.sbomify.com/CVE-2026-35516/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-35516
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-35516
- OSV: https://osv.dev/vulnerability/CVE-2026-35516

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-35516/
Summaries are generated and may contain mistakes; the official description above is the record.