Unchecked Input for Loop Condition Affecting bind package, versions [9.18.0,9.19.0)[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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- published24 Sept 2026
- disclosed16 Sept 2026
- creditUnknown
Introduced: 16 Sep 2026
NewCVE-2026-81736 (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 Unchecked Input for Loop Condition via the processing of cached SVCB/HTTPS AliasMode records. An attacker can cause excessive CPU consumption by sending crafted queries, resulting in service disruption for legitimate users.
Workaround
This vulnerability can be mitigated by configuring resolvers to restrict recursive queries to trusted clients only using the allow-recursion option in the configuration file.