Apache Sling Security Bundle Updates Address Two Filter Bypasses
Tech GuruQuick Answer
The authority published CVE-2026-94243 for Apache Sling Security Bundle releases before 1.3.2 for RefererFilter and before 1.3.12 for ContentDispositionFilter. A vulnerability in Apache Sling Security Bundle: the ReferrerFilter accepts weaker-than-orgin evidence. This issue affects Apache Sling Security Bundle: before 1.3.2. A vulnerability in Apache Sling Security Bundle:Â ContentDispositionFilter mediates only one address/API shape of a resource This issue affects Apache Sling Security Bundle: before 1.3.12. 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 Security Bundle releases before 1.3.2 for RefererFilter and before 1.3.12 for ContentDispositionFilter, 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 Security Bundle releases before 1.3.2 for RefererFilter and before 1.3.12 for ContentDispositionFilter |
|---|---|
| Advisory | CVE-2026-94243 / CVE-2026-94251 |
| CVEs | CVE-2026-94243, CVE-2026-94251 |
| Authoritative release date | 2026-09-23 09:42:27.928 UTC |
| Authority revision date | 2026-09-23 15:16:37.469 UTC |
| Affected versions | Apache Sling Security Bundle releases before 1.3.2 for RefererFilter and before 1.3.12 for ContentDispositionFilter |
| Fixed version | Apache Sling Security Bundle 1.3.12, or at least 1.3.2 where only CVE-2026-94243 applies |
| CVSS base score | Not provided by the authority |
| CVSS severity | Low |
| Exploitation status | Not stated by the authority; no exploitation claim is inferred. |
What Changed
A vulnerability in Apache Sling Security Bundle: the ReferrerFilter accepts weaker-than-orgin evidence. This issue affects Apache Sling Security Bundle: before 1.3.2. A vulnerability in Apache Sling Security Bundle:Â ContentDispositionFilter mediates only one address/API shape of a resource This issue affects Apache Sling Security Bundle: before 1.3.12.
What To Validate Now
- Inventory. Locate Apache Sling Security Bundle releases before 1.3.2 for RefererFilter and before 1.3.12 for ContentDispositionFilter deployments, versions, enabled features, exposure paths, owners, and dependent services.
- Establish applicability. Compare each deployment with the authority's affected-version statement: Apache Sling Security Bundle releases before 1.3.2 for RefererFilter and before 1.3.12 for ContentDispositionFilter Do not infer applicability from product family or severity alone.
- Remediate. Apply Apache Sling Security Bundle 1.3.12, or at least 1.3.2 where only CVE-2026-94243 applies 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.
