CVE-2011-1772: Multiple cross-site scripting (XSS) vulnerabilities in XWork in Apache Struts 2.x before 2.2.3, and OpenSympho

Q: How do I fix CVE-2011-1772?

struts: downgrade or apply the listed mitigation; webwork: mitigate or apply the listed mitigation; xwork: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2011-1772 being exploited?

CVE-2011-1772 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2011-1772 affect?

CVE-2011-1772 affects struts, webwork, xwork. Severity is low (CVSS 2.6). Multiple cross-site scripting (XSS) vulnerabilities in XWork in Apache Struts 2.x before 2.2.3, and OpenSymphony XWork in OpenSymphony WebWork, allow remote attackers to inject arbitrary web script or HTML via vectors involving (1) an actio

Q: How urgent is CVE-2011-1772?

Priority 44/100. EPSS top 2%: very likely to be exploited; Public exploit reference; On your watchlist

This week

LOW 2.6WATCHLISTDOWNGRADEMITIGATEMITIGATE

CVE-2011-1772 is a low-severity flaw (CVSS 2.6) affecting struts, webwork, xwork. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in XWork in Apache Struts 2.x before 2.2.3, and OpenSymphony XWork in OpenSymphony WebWork, allow remote attackers to inject arbitrary web script or HTML via vectors involving (1) an action name, (2) the action attribute of an s:submit element, or (3) the method attribute of an s:submit element.

Why this priority

EPSS top 2%: very likely to be exploited
Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	2.6 (Low)
EPSS exploit chance	33.3% (top 2%)
CISA exploited list	No
Weakness	CWE-79
Published	2011-05-13
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: apache · opensymphony

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2011-05-13 17:05 UTCPublished CVE record published
2026-06-16 23:29 UTCUpdated Record last modified

apache struts DOWNGRADE

Affected: 2.0.0 · 2.0.1 · 2.0.2 · 2.0.3 · 2.0.4 · 2.0.5 · 2.0.6 · 2.0.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.0

1. Check installed version

apt-cache policy struts || rpm -q struts || struts --version

2. No fixed release: DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)

apt-cache madison struts sudo apt install struts=<VERSION_BEFORE_2.0.0> sudo apt-mark hold struts

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list struts sudo dnf downgrade struts-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add struts

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

opensymphony webwork MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy webwork || rpm -q webwork || webwork --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

opensymphony xwork MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xwork || rpm -q xwork || xwork --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Apache Struts 2.0.0 < 2.2.1.1 - XWork 's:submit' HTML Tag Cross-Site Scripting

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2011-1772?

struts: downgrade or apply the listed mitigation; webwork: mitigate or apply the listed mitigation; xwork: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-1772 being exploited?

CVE-2011-1772 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2011-1772 affect?

CVE-2011-1772 affects struts, webwork, xwork. Severity is low (CVSS 2.6). Multiple cross-site scripting (XSS) vulnerabilities in XWork in Apache Struts 2.x before 2.2.3, and OpenSymphony XWork in OpenSymphony WebWork, allow remote attackers to inject arbitrary web script or HTML via vectors involving (1) an actio

How urgent is CVE-2011-1772?

Priority 44/100. EPSS top 2%: very likely to be exploited; Public exploit reference; On your watchlist

Software pages

Apache Struts vulnerabilities

Related CVEs

CVE-2016-1182 HIGH 8.2 DOWNGRADE ActionServlet.java in Apache Struts 1 1.x through 1.3.10 does not properly restrict the Validator configuratio
CVE-2016-1181 HIGH 8.1 DOWNGRADE DOWNGRADE ActionServlet.java in Apache Struts 1 1.x through 1.3.10 mishandles multithreaded access to an ActionForm inst
CVE-2025-66675 HIGH 8.2 UPGRADE Denial of Service vulnerability in Apache Struts, file leak in multipart request processing causes disk exhaus
CVE-2014-0114 HIGH 7.5 UPGRADE DOWNGRADE Apache Commons BeanUtils, as distributed in lib/commons-beanutils-1.8.0.jar in Apache Struts 1.x through 1.3.1
CVE-2026-104714 HIGH 8.8 UPGRADE Concurrent execution using shared resource with improper synchronization ('race condition') vulnerability in A

References

← Back to latest CVEs