XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.15, a Server-Side Forgery Request vulnerability can be activated when unmarshalling. The vulnerability may allow a remote attacker to request data from internal resources that are not publicly available only by manipulating the processed input stream. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.15. The reported vulnerability does not exist if running Java 15 or higher. No user is affected who followed the recommendation to setup XStream's Security Framework with a whitelist! Anyone relying on XStream's default blacklist can immediately switch to a whilelist for the allowed types to avoid the vulnerability. Users of XStream 1.4.14 or below who still want to use XStream default blacklist can use a workaround described in more detailed in the referenced advisories.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-2507-1 | libxstream-java security update |
Debian DSA |
DSA-4828-1 | libxstream-java security update |
Github GHSA |
GHSA-4cch-wxpw-8p28 | Server-Side Forgery Request can be activated unmarshalling with XStream |
Ubuntu USN |
USN-4714-1 | XStream vulnerabilities |
Ubuntu USN |
USN-4943-1 | XStream vulnerabilities |
Ubuntu USN |
USN-6978-1 | XStream vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 23 May 2025 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Apache
Apache struts Xstream Xstream xstream |
|
| CPEs | cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:* cpe:2.3:a:xstream:xstream:*:*:*:*:*:*:*:* |
|
| Vendors & Products |
Xstream Project
Xstream Project xstream |
Apache
Apache struts Xstream Xstream xstream |
Wed, 15 Jan 2025 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | A Server-Side Forgery Request can be activated unmarshalling with XStream | Server-Side Forgery Request can be activated unmarshalling with XStream |
| References |
|
|
| Metrics |
cvssV3_1
|
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-01-15T20:20:17.971Z
Reserved: 2020-10-01T00:00:00
Link: CVE-2020-26258
No data.
Status : Analyzed
Published: 2020-12-16T01:15:12.333
Modified: 2025-05-23T16:53:23.900
Link: CVE-2020-26258
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
Github GHSA
Ubuntu USN