Is CVE-2018-11776 exploited in the wild?

Yes. CVE-2018-11776 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

How severe is CVE-2018-11776?

Critical severity, with a CVSS score of 3, published 18 October 2018.

Which products and versions are affected?

org.apache.struts:struts2-core (Maven) ECOSYSTEM:introduced=2.0.4,fixed=2.3.35.

Is there a fix for CVE-2018-11776?

Yes. org.apache.struts:struts2-core (Maven): upgrade to 2.3.35 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2018-11776 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2018-11776?

Check whether you run Apache Struts or org.apache.struts:struts2-core (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2018-11776: Apache Struts vulnerable to remote command execution (RCE) due to improper input validation

CVE-2018-11776 · Severity: critical · CVSS 3 · Exploited in the wild · Published 2018-10-18

Apache Struts is vulnerable to Remote Code Execution (RCE) when the alwaysSelectFullNamespace option is enabled. The flaw occurs when results or URL tags are used without a defined namespace while the upper package configuration uses no namespace or a wildcard namespace, allowing for malicious OGNL expression evaluation.

Technologies: Apache Struts, org.apache.struts:struts2-core (Maven). Vendors: Apache, Maven.

Quick answers

Is CVE-2018-11776 exploited in the wild?: Yes. CVE-2018-11776 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2018-11776?: Critical severity, with a CVSS score of 3, published 18 October 2018.
Which products and versions are affected?: org.apache.struts:struts2-core (Maven) ECOSYSTEM:introduced=2.0.4,fixed=2.3.35.
Is there a fix for CVE-2018-11776?: Yes. org.apache.struts:struts2-core (Maven): upgrade to 2.3.35 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2018-11776 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2018-11776?: Check whether you run Apache Struts or org.apache.struts:struts2-core (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

org.apache.struts:struts2-core (Maven): upgrade to 2.3.35 or later

# set org.apache.struts:struts2-core to 2.3.35 in your pom.xml or build.gradle

Affected products

Apache Struts 2.3 to 2.3.34, 2.5 to 2.5.16

Identifiers

CVE-2018-11776
GHSA-cr6j-3jp9-rw65

Timeline

2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
2021-11-03: disclosed

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