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TI-2026-62129 Aliases CVE-2026-91999GHSA-p3rj-cf34-r824

Apache Sling XSS: Improper escaping in the XSS Webconsole plugin

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

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. Users are recommended to upgrade to version 2.4.12, which fixes the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00573 47th percentileScored 2026-11-07
Fix Fixed Apache Sling XSS (Apache Software Foundation): 2.4.12

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Sling XSSbefore 2.4.122.4.12Patch availableCNA
  • Apache Sling XSS VendorApache Affected before 2.4.12 Fixed in 2.4.12 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:sling_xss_protection_api:*:*:*:*:*:*:*:*before 2.4.12VulnerableApache
  • cpe:2.3:a:apache:sling_xss_protection_api:*:*:*:*:*:*:*:* Versions before 2.4.12 Vulnerable ·Apache

Remediation

  • Fix · CNA Apache Sling XSS (Apache Software Foundation) Fixed in 2.4.12

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache Sling XSS 2.4.12

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2026-62045 Apache Sling XSS: CWE-79 multiple raw-string break-outs and ReDOS in XSSImplPriority LOW 29
    • TI-2026-62131 Apache Sling XSS: Missing parser resource limitsPriority LOW 28
    • TI-2026-62063 Apache Sling XSS: Sanitizer bypass, uncontrolled resource consumption and failure pf protection mechanismsPriority LOW 28
    Show all 5 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-91999
  2. 2026-10-03 Alias added: GHSA-p3rj-cf34-r824

References

Advisory 2

  • TI-2017-11488 Cross-site scripting in Apache Sling CVSS 3.0MEDIUM 6.1
  • TI-2026-62045 Apache Sling XSS: CWE-79 multiple raw-string break-outs and ReDOS in XSSImpl CVSS 3.1MEDIUM 6.1
  • TI-2026-62131 Apache Sling XSS: Missing parser resource limits CVSS 3.1MEDIUM 6.1
  • TI-2026-62063 Apache Sling XSS: Sanitizer bypass, uncontrolled resource consumption and failure pf protection mechanisms CVSS 3.1MEDIUM 6.1
  • TI-2026-51337 Apache Sling XSS: XSS possible through XSSAPI.getValidHref() CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences