Improper Filtering of Special Elements Affecting bind package, versions [9.16.0,9.20.26)[9.21.0,9.21.24)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published25 Jul 2026
- disclosed22 Jul 2026
- creditUnknown
Introduced: 22 Jul 2026
CVE-2026-11331 (opens in a new tab)How to fix?
Upgrade bind to version 9.20.26, 9.21.24 or higher.
Overview
Affected versions of this package are vulnerable to Improper Filtering of Special Elements in the RPZ processing when handling wildcard CNAME policies and receiving specially crafted query names that are sufficiently long to trigger a NAMETOOLONG error. An attacker can bypass intended policy enforcement or cause an unexpected process termination by submitting such queries.