Out-of-Bounds Affecting firebirdsql/firebird package, versions [,3.0.14)[4.0.0,4.0.7)[5.0.0-beta1,5.0.4)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-FIREBIRDSQLFIREBIRD-16318406
- published28 Apr 2026
- disclosed17 Apr 2026
- creditUnknown
Introduced: 17 Apr 2026
CVE-2026-27890 (opens in a new tab)How to fix?
Upgrade firebirdsql/firebird to version 3.0.14, 4.0.7, 5.0.4 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-Bounds via the grow() function. An attacker can cause the server to crash by sending CNCT_specific_data segments out of order during authentication.