CVE-2026-91852
mediumImproper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling XSS.
Vendor / product: Apache — sling xss protection api
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.
CVSS
6.1
6.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
Timeline (UTC)
Published: 2026-09-23 10:17
Modified: 2026-09-30 16:13
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 06:55 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
apache / sling_xss_protection_api <2.4.12
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://lists.apache.org/thread/nd0ncdk5qb9gqvn0s10rmhnbk887k1qo
References
- https://lists.apache.org/thread/nd0ncdk5qb9gqvn0s10rmhnbk887k1qo security@apache.org
- https://sling.apache.org/news.html security@apache.org
- http://www.openwall.com/lists/oss-security/2026/09/23/12 af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:55 UTC · record ↗