Improper Handling of Inconsistent Special Elements Affecting bind package, versions [9.11.0,9.19.0)[9.20.0,9.20.29)[9.21.0,9.21.26)
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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Test your applications- Snyk IDSNYK-UNMANAGED-BIND-20074804
- published24 Sept 2026
- disclosed16 Sept 2026
- creditUnknown
Introduced: 16 Sep 2026
NewCVE-2026-78301 (opens in a new tab)How to fix?
Upgrade bind to version 9.19.0, 9.20.29, 9.21.26 or higher.
Overview
Affected versions of this package are vulnerable to Improper Handling of Inconsistent Special Elements insertion of a malformed zone via zone transfer. An attacker can cause the server to cache attacker-supplied data for names outside the configured zone by introducing a specially crafted DNS zone into an authoritative server that also performs recursive lookups.
Workaround
This vulnerability can be mitigated by separating authoritative and recursive DNS functions onto different instances or servers, and by restricting zone transfer sources to trusted hosts using the allow-transfer directive in the configuration file.