# CVE-2026-25707: Handcrafted repo metadata may cause arbitrary local files to be overwritten by libzypp

> Remote attackers can overwrite local files via malicious repository metadata in libzypp, potentially causing denial of service or privilege escalation.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 29 Jun 2026
- **Updated:** 30 Jun 2026
- **Also known as:** DEBIAN-CVE-2026-25707, GHSA-4h5m-3w75-qcq5, UBUNTU-CVE-2026-25707, openSUSE-SU-2026:10896-1

## What is CVE-2026-25707?

CVE-2026-25707 is a high-severity path traversal vulnerability in SUSE libzypp, published on 29 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A relative path traversal bug problem when processing repository metadata in libzypp before 17.38.10 could be used by remote attackers supplying repositories to overwrite files on the system, leading to denial of service or privilege escalation.

Weakness: CWE-23 (Relative Path Traversal)

## Which versions are affected by CVE-2026-25707?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `libzypp` | openSUSE:Tumbleweed | All versions | 17.38.10-1.1 |

Products: Opensuse Libzypp.

## How do I fix CVE-2026-25707?

Upgrade to a fixed version.

## Is CVE-2026-25707 being exploited?

There is no known exploitation of CVE-2026-25707 in the wild and no public exploit code.

## Other vulnerabilities in SUSE libzypp

- [CVE-2026-44941](https://insights.sbomify.com/CVE-2026-44941/): libzypp path traversal via "keyhint" in repomd.xml (high 8.4)
- [CVE-2017-7435](https://insights.sbomify.com/CVE-2017-7435/): libzypp accepts unsigned 3rd party repo without warning (high 8.1)
- [CVE-2017-7436](https://insights.sbomify.com/CVE-2017-7436/): libzypp accepts unsigned packages even when configured to check signatures (high 8.1)
- [CVE-2018-7685](https://insights.sbomify.com/CVE-2018-7685/): libzypp does not reevaluate malicious rpms once downloaded (high 7.8)
- [CVE-2017-9269](https://insights.sbomify.com/CVE-2017-9269/): lack of keypinning in libzypp could lead to repository switching (high 7.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-25707 and fix it if it is affected.

What it is: CVE-2026-25707 is a high-severity path traversal vulnerability in SUSE libzypp, published on 29 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-25707 in the wild and no public exploit code.

Affected product: SUSE libzypp. 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-2026-25707/ (Markdown: https://insights.sbomify.com/CVE-2026-25707/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-25707
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-25707
- OSV: https://osv.dev/vulnerability/CVE-2026-25707

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-25707/
Summaries are generated and may contain mistakes; the official description above is the record.