What is CVE-2018-1327?

CVE-2018-1327 is a high-severity vulnerability in Apache Struts. CVSS score: 7.5/10. Published 2018-03-27.

How severe is CVE-2018-1327?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2018-1327 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Apache Struts

CVE-2018-1327

The Apache Struts REST Plugin is using XStream library which is vulnerable and allow perform a DoS attack when using a malicious request with specially crafted XML payload. Upgrade to the Apache Struts version 2.5.16 and switch to an optional Jackson XML handler as described here http://struts.apache.org/plugins/rest/#custom-contenttypehandlers. Another option is to implement a custom XML handler based on the Jackson XML handler from the Apache Struts 2.5.16.

Published 2018-03-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.086 (95.0th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.088 · newest: 0.086 · change: -0.002

Affected products

Apache Struts
Apache Software Foundation Struts — versions Apache Struts 2.1.1 to 2.5.14.1

Public proof-of-concept exploits

References

security.netapp.com/advisory/ntap-20180330-0001/ (Third Party Advisory)
www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html (Patch, Third Party Advisory)
www.securitytracker.com/id/1040575 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/103516 (VDB Entry, Third Party Advisory, vdb-entry)
cwiki.apache.org/confluence/display/WW/S2-056 (Third Party Advisory, Issue Tracking)
lists.apache.org/thread.html/r02c2d634fa74209d941c90f9a4cd36a6f12366ca65f9b9044… (mailing-list)
lists.apache.org/thread.html/rf482c101a88445d73cc2e89dbf7f16ae00a4aa79a544a1e72… (mailing-list)

Frequently asked questions

What is CVE-2018-1327?: CVE-2018-1327 is a high-severity vulnerability in Apache Struts. CVSS score: 7.5/10. Published 2018-03-27.
How severe is CVE-2018-1327?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-1327 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.