# CVE-2026-45277: Nextcloud: Information disclosure in Nextcloud Approval app via fileId parameter reveals workflow associations

> Authenticated users can reveal workflow associations for arbitrary files via the fileId parameter in the Nextcloud Approval app.

- **Severity:** Low 3.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jun 2026
- **Updated:** 1 Jun 2026
- **Also known as:** GHSA-h7gm-vgxr-9hcw

## What is CVE-2026-45277?

CVE-2026-45277 is a low-severity vulnerability in nextcloud security-advisories, published on 1 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Nextcloud is an open source content collaboration platform. Prior to version 2.7.2, authenticated users can check if arbitrary files are associated with specific approval workflows where they can request approval. This issue has been patched in version 2.7.2.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2026-45277?

It affects 1 product.


Products: Nextcloud Approval.

## How do I fix CVE-2026-45277?

No fix has been published for CVE-2026-45277 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-45277 being exploited?

There is no known exploitation of CVE-2026-45277 in the wild and no public exploit code.

## Other vulnerabilities in nextcloud security-advisories

- [CVE-2026-45275](https://insights.sbomify.com/CVE-2026-45275/): Nextcloud: Authorization bypass in approval feature allows unauthorized file sharing with approvers (medium 6.5)
- [CVE-2025-66515](https://insights.sbomify.com/CVE-2025-66515/): Nextcloud Approval app allows users to request approval for other users file (low 2.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-45277 and fix it if it is affected.

What it is: CVE-2026-45277 is a low-severity vulnerability in nextcloud security-advisories, published on 1 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-45277 in the wild and no public exploit code.

Affected product: nextcloud security-advisories. 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-2026-45277/ (Markdown: https://insights.sbomify.com/CVE-2026-45277/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-45277
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-45277
- OSV: https://osv.dev/vulnerability/CVE-2026-45277

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-45277/
Summaries are generated and may contain mistakes; the official description above is the record.