# CVE-2026-82877: ILIAS Arbitrary File Read via SOAP addFile

> Authenticated attackers can read arbitrary server files, including credentials, via crafted XML in the SOAP addFile method.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA: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:** 31 Aug 2026
- **Updated:** 30 Sep 2026
- **Also known as:** GHSA-pmmj-hr44-h52v

## What is CVE-2026-82877?

CVE-2026-82877 is a high-severity path traversal vulnerability in ILIAS-eLearning e.V. ILIAS, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

ILIAS before versions 9.22, 10.10, and 11.3 contains an arbitrary file read vulnerability in the SOAP addFile method that allows authenticated users to read server files by supplying crafted XML with COPY-mode imports. Attackers can construct absolute file paths through an unsandboxed import directory and retrieve sensitive files including configuration files containing database credentials and setup passwords.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-82877?


## How do I fix CVE-2026-82877?

No fix has been published for CVE-2026-82877 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-82877 being exploited?

There is no known exploitation of CVE-2026-82877 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-82877 and fix it if it is affected.

What it is: CVE-2026-82877 is a high-severity path traversal vulnerability in ILIAS-eLearning e.V. ILIAS, published on 31 Aug 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-2026-82877 in the wild and no public exploit code.

Affected product: ILIAS-eLearning e.V. ILIAS. 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-2026-82877/ (Markdown: https://insights.sbomify.com/CVE-2026-82877/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-82877
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-82877
- OSV: https://osv.dev/vulnerability/CVE-2026-82877

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-82877/
Summaries are generated and may contain mistakes; the official description above is the record.