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Maven
Not in CISA KEV
HIGH severity

GHSA-j8wc-gxx9-82hx xmlsec

HIGH

GHSA-j8wc-gxx9-82hx is a high-severity (CVSS 7.5) Information Exposure vulnerability in org.apache.santuario:xmlsec. 2 public exploit references exist, so weaponization risk is real. A fix is available for org.apache.santuario:xmlsec — see the affected versions and patch details below.

Exposure of Sensitive Information to an Unauthorized Actor in Apache Santuario

Also known asCVE-2021-40690
Published
Sep 20, 2021
Updated
Feb 4, 2026
Affected
2 pkgs
Patched
2 / 2
Exploits
2 known
Exploitation data as of Sep 20, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
7.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs94th percentile — riskier than 94% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

GHSA-j8wc-gxx9-82hx plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 377,333 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

2 pkgs affected
org.apache.santuario:xmlsecorg.apache.santuario:xmlsec

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

All versions of Apache Santuario - XML Security for Java prior to 2.2.3 and 2.1.7 are vulnerable to an issue where the "secureValidation" property is not passed correctly when creating a KeyInfo from a KeyInfoReference element. This allows an attacker to abuse an XPath Transform to extract any local .xml files in a RetrievalMethod element.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
Mavenorg.apache.santuario:xmlsec2.2.0&&< 2.2.32.2.3org.apache.santuario:xmlsec:2.2.3
Mavenorg.apache.santuario:xmlsecall versions2.1.7org.apache.santuario:xmlsec:2.1.7
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.santuario:xmlsec, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.santuario:xmlsec to 2.2.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j8wc-gxx9-82hx is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-j8wc-gxx9-82hx can be triaged on real exposure rather than presence alone.

Tailored to GHSA-j8wc-gxx9-82hx. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

Since OpenShift Container Platform (OCP) 4.7, the logging-elasticsearch6-container is shipping as a part of the OpenShift Logging product (openshift-logging/elasticsearch6-rhel8). The elasticsearch component delivered in OCP 4.6 is marked as `Out of support scope` because these versions are already under Maintenance…

ProductFixed inAdvisory
EAP 7.3.10 GAxmlsecRHSA-2021:5154
Red Hat EAP-XP 2 via EAP 7.3.x basexmlsecRHSA-2022:0146
Red Hat Fuse 7.11xmlsecRHSA-2022:5532
Red Hat JBoss Enterprise Application Platformorg.apache.santuario/xmlsec:2.1.7.redhat-00001RHSA-2021:4679
Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7eap7-activemq-artemis-0:1.5.5.016-1.redhat_00001.1.ep7.el7RHSA-2025:4226
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 6eap7-apache-cxf-0:3.3.12-1.redhat_00001.1.el6eapRHSA-2021:5149
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 7eap7-apache-cxf-0:3.3.12-1.redhat_00001.1.el7eapRHSA-2021:5150
Red Hat JBoss Enterprise Application Platform 7.3 for RHEL 8eap7-apache-cxf-0:3.3.12-1.redhat_00001.1.el8eapRHSA-2021:5151

Frequently Asked Questions

All versions of Apache Santuario - XML Security for Java prior to 2.2.3 and 2.1.7 are vulnerable to an issue where the "secureValidation" property is not passed correctly when creating a KeyInfo from a KeyInfoReference element. This allows an attacker to abuse an XPath Transform to extract any local .xml files in a RetrievalMethod element.
O3 Security · Impact-Aware SCA

Is GHSA-j8wc-gxx9-82hx in your dependencies?

O3 Security finds GHSA-j8wc-gxx9-82hx across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-j8wc-gxx9-82hx: xmlsec (High 7.5) | O3 Security