CVE-2026-82877: Path Traversal (CVSS 6.5)

Description

ILIAS versions before 9.22, 10.0 through 10.9, and 11.0 through 11.2 contain 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.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0036

Probability of exploitation

0.30%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-22 Path Traversal

References

Other References

https://github.com/ILIAS-eLearning/ILIAS https://github.com/ILIAS-eLearning/ILIAS/blob/v11.2/components/ILIAS/File/classes/class.ilFileXMLParser.php#L244 https://github.com/ILIAS-eLearning/ILIAS/blob/v11.2/components/ILIAS/soap/classes/class.ilSoapFileAdministration.php#L56 https://github.com/ILIAS-eLearning/ILIAS/commit/e9acd3f8d498279f6c26a145ca32ce85152496a4 https://www.vulncheck.com/advisories/ilias-before-9.22-arbitrary-file-read-via-soap-addfile

Frequently Asked Questions

What is CVE-2026-82877? +

ILIAS versions before 9.22, 10.0 through 10.9, and 11.0 through 11.2 contain 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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-82877? +

CVE-2026-82877 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0036, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-82877? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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