Heap-based Buffer Overflow Affecting nginx package, versions [0.5.13,1.28.3)[1.29.0,1.29.7)
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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- published29 Mar 2026
- disclosed24 Mar 2026
- creditCalif.io
Introduced: 24 Mar 2026
CVE-2026-27654 (opens in a new tab)How to fix?
Upgrade nginx to version 1.28.3, 1.29.7 or higher.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the ngx_http_dav_module process. An attacker can cause the termination of the worker process or modify file names outside the intended document root by sending specially crafted MOVE or COPY requests when the configuration uses prefix location and alias directives. This is only exploitable if the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives.