RCE in X-stream Xstream
CVE-2020-26259
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.15, is vulnerable to an Arbitrary File Deletion on the local host when unmarshalling. The vulnerability may allow a remote attacker to dele…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.889 (99.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N.
Affected products
- X-stream Xstream — versions < 1.4.15
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/x-stream/xstream/security/advisories/GHSA-jfvx-7wrx-43fh (x_refsource_CONFIRM)
- x-stream.github.io/CVE-2020-26259.html (x_refsource_MISC)
- [struts-commits] 20201221 [struts] branch master updated: Upgrades XStream to version 1.4.15 to address CVE-2020-26258, CVE-2020-26259 (mailing-list, x_refsource_MLIST)
- [debian-lts-announce] 20201231 [SECURITY] [DLA 2507-1] libxstream-java security update (mailing-list, x_refsource_MLIST)
- DSA-4828 (vendor-advisory, x_refsource_DEBIAN)
- security.netapp.com/advisory/ntap-20210409-0005/ (x_refsource_CONFIRM)
- FEDORA-2021-fbad11014a (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-d894ca87dc (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-5e376c0ed9 (vendor-advisory, x_refsource_FEDORA)
Frequently asked questions
- What is CVE-2020-26259?
- CVE-2020-26259 is a medium-severity vulnerability in X-stream Xstream, classified under OS Command Injection. CVSS score: 6.8/10. Published 2020-12-16.
- How severe is CVE-2020-26259?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2020-26259 known to be exploited?
- 25 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.