# CVE-2026-45544: Nextcloud: Information Disclosure of view filter metdata via Broken Sensitive Data Masking in ViewService

> Attackers with read-only access can view sensitive filter metadata in Nextcloud Tables, exposing configuration details.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jun 2026
- **Updated:** 1 Jun 2026
- **Also known as:** GHSA-vvxm-6jjp-m9mp

## What is CVE-2026-45544?

CVE-2026-45544 is a medium-severity vulnerability in nextcloud security-advisories, published on 1 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Nextcloud is an open source content collaboration platform. From version 0.8.0 to before version 1.0.4, the view filter criteria is exposed to users with read-only permissions in Nextcloud Tables. This issue has been patched in versions 1.0.4 and 2.0.0.

Weakness: CWE-1230 (Exposure of Sensitive Information Through Metadata)

## Which versions are affected by CVE-2026-45544?

It affects 1 product.


Products: Nextcloud Tables.

## How do I fix CVE-2026-45544?

No fix has been published for CVE-2026-45544 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-45544 being exploited?

There is no known exploitation of CVE-2026-45544 in the wild and no public exploit code.

## Other vulnerabilities in nextcloud security-advisories

- [CVE-2026-45545](https://insights.sbomify.com/CVE-2026-45545/): Nextcloud: SQL Injection in Column Type Parameter Allows Arbitrary SQL Execution (high 8.2)
- [CVE-2026-45722](https://insights.sbomify.com/CVE-2026-45722/): Nextcloud: Tables app allows limited SQLi in ORDER BY with malicious sort order argument for Table Views (high 7.1)
- [CVE-2025-66551](https://insights.sbomify.com/CVE-2025-66551/): Nextcloud Tables is missing an ownership check which allows moving columns into tables of other users (medium 6.3)
- [CVE-2024-52511](https://insights.sbomify.com/CVE-2024-52511/): Nextcloud Tables has an Authorization Bypass Through User-Controlled Key in Tables (medium 6.3)
- [CVE-2025-66513](https://insights.sbomify.com/CVE-2025-66513/): Nextcloud Tables app share information not limited to relevant users (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-45544 and fix it if it is affected.

What it is: CVE-2026-45544 is a medium-severity vulnerability in nextcloud security-advisories, published on 1 Jun 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-2026-45544 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-2026-45544/ (Markdown: https://insights.sbomify.com/CVE-2026-45544/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-45544
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-45544
- OSV: https://osv.dev/vulnerability/CVE-2026-45544

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-45544/
Summaries are generated and may contain mistakes; the official description above is the record.