Apache Sling XSS 2.4.12 Addresses Five Sanitization and Resource Flaws
Tech GuruQuick Answer
The authority published CVE-2026-73192 for Apache Sling XSS releases before 2.4.12. An improper neutralization of input during web page generation ('Cross-site Scripting') [CWE-79] vulnerability when using the XSSAPI.getValidHref() in Apache Sling XSS version 2.4.10 and prior may allow an attacker to perform a reflected cross-site scripting (XSS) attack in every feature using this method. In order to successfully attack an application, the attacker needs to be able to submit a value which is not correctly sanitized by that library. Upgrade to Apache Sling XSS >= 2.4.12 Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS. This issue affects Apache Sling XSS: before 2.4.12. Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS. This issue affects Apache Sling XSS: before 2.4.12. Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS. This issue affects Apache Sling XSS: before 2.4.12. Improper restriction of recursive entity references in DTDs ('XML entity expansion') vulnerability in Apache Sling XSS. This issue affects Apache Sling XSS: before 2.4.12. Affected deployments should be matched to the authority's exact scope and moved to the supported fixed release.
Confirm Scope And Apply The Supported Fix
What to do now: Inventory Apache Sling XSS releases before 2.4.12, match the exact affected release or feature, apply the authority-supported fixed build or service remediation, validate the dependent workflow, and preserve evidence.
Last verified: 2026-09-23 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | Apache Sling XSS releases before 2.4.12 |
|---|---|
| Advisory | CVE-2026-73192 / CVE-2026-91852 / CVE-2026-91928 / CVE-2026-91999 / CVE-2026-92001 |
| CVEs | CVE-2026-73192, CVE-2026-91852, CVE-2026-91928, CVE-2026-91999, CVE-2026-92001 |
| Authoritative release date | 2026-09-23 09:09:43.637 UTC |
| Authority revision date | 2026-09-23 14:14:44.677 UTC |
| Affected versions | Apache Sling XSS releases before 2.4.12 |
| Fixed version | Apache Sling XSS 2.4.12 |
| CVSS base score | Not provided by the authority |
| CVSS severity | Low to Moderate |
| Exploitation status | Not stated by the authority; no exploitation claim is inferred. |
What Changed
An improper neutralization of input during web page generation ('Cross-site Scripting') [CWE-79] vulnerability when using the XSSAPI.getValidHref() in Apache Sling XSS version 2.4.10 and prior may allow an attacker to perform a reflected cross-site scripting (XSS) attack in every feature using this method. In order to successfully attack an application, the attacker needs to be able to submit a value which is not correctly sanitized by that library. Upgrade to Apache Sling XSS >= 2.4.12 Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS. This issue affects Apache Sling XSS: before 2.4.12. Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS. This issue affects Apache Sling XSS: before 2.4.12. Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS. This issue affects Apache Sling XSS: before 2.4.12. Improper restriction of recursive entity references in DTDs ('XML entity expansion') vulnerability in Apache Sling XSS. This issue affects Apache Sling XSS: before 2.4.12.
What To Validate Now
- Inventory. Locate Apache Sling XSS releases before 2.4.12 deployments, versions, enabled features, exposure paths, owners, and dependent services.
- Establish applicability. Compare each deployment with the authority's affected-version statement: Apache Sling XSS releases before 2.4.12 Do not infer applicability from product family or severity alone.
- Remediate. Apply Apache Sling XSS 2.4.12 through the supported vendor or project channel, following the current advisory and change-control requirements.
- Validate. Confirm the resulting version or managed-service state, exercise representative functionality and recovery paths, monitor for regressions, and document exceptions.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
Use the exact supported release stream and repository. Test dependencies, clusters, integrations, and rollback before broad deployment; a CVSS rating or reachable feature is not evidence of exploitation.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
