Vulnerability Details CVE-2025-54801
Fiber is an Express inspired web framework written in Go. In versions 2.52.8 and below, when using Fiber's Ctx.BodyParser to parse form data containing a large numeric key that represents a slice index (e.g., test.18446744073704), the application crashes due to an out-of-bounds slice allocation in the underlying schema decoder. The root cause is that the decoder attempts to allocate a slice of length idx + 1 without validating whether the index is within a safe or reasonable range. If the idx is excessively large, this leads to an integer overflow or memory exhaustion, causing a panic or crash. This is fixed in version 2.52.9.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 19.2%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2025-54801
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cpe:2.3:a:gofiber:fiber:-
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cpe:2.3:a:gofiber:fiber:1.14.1
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cpe:2.3:a:gofiber:fiber:1.14.2
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cpe:2.3:a:gofiber:fiber:1.14.3
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cpe:2.3:a:gofiber:fiber:1.14.4
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cpe:2.3:a:gofiber:fiber:1.14.5
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cpe:2.3:a:gofiber:fiber:1.14.6
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cpe:2.3:a:gofiber:fiber:2.0.0
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cpe:2.3:a:gofiber:fiber:2.0.1
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cpe:2.3:a:gofiber:fiber:2.0.2
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cpe:2.3:a:gofiber:fiber:2.0.3
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cpe:2.3:a:gofiber:fiber:2.0.4
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cpe:2.3:a:gofiber:fiber:2.0.5
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cpe:2.3:a:gofiber:fiber:2.0.6
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cpe:2.3:a:gofiber:fiber:2.1.0
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cpe:2.3:a:gofiber:fiber:2.1.1
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cpe:2.3:a:gofiber:fiber:2.1.2
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cpe:2.3:a:gofiber:fiber:2.1.3
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cpe:2.3:a:gofiber:fiber:2.1.4
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cpe:2.3:a:gofiber:fiber:2.10.0
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cpe:2.3:a:gofiber:fiber:2.11.0
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cpe:2.3:a:gofiber:fiber:2.12.0
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cpe:2.3:a:gofiber:fiber:2.13.0
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cpe:2.3:a:gofiber:fiber:2.14.0
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cpe:2.3:a:gofiber:fiber:2.15.0
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cpe:2.3:a:gofiber:fiber:2.16.0
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cpe:2.3:a:gofiber:fiber:2.17.0
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cpe:2.3:a:gofiber:fiber:2.18.0
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cpe:2.3:a:gofiber:fiber:2.19.0
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cpe:2.3:a:gofiber:fiber:2.2.0
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cpe:2.3:a:gofiber:fiber:2.2.1
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cpe:2.3:a:gofiber:fiber:2.2.2
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cpe:2.3:a:gofiber:fiber:2.2.3
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cpe:2.3:a:gofiber:fiber:2.2.4
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cpe:2.3:a:gofiber:fiber:2.2.5
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cpe:2.3:a:gofiber:fiber:2.20.0
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cpe:2.3:a:gofiber:fiber:2.20.1
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cpe:2.3:a:gofiber:fiber:2.20.2
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cpe:2.3:a:gofiber:fiber:2.21.0
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cpe:2.3:a:gofiber:fiber:2.22.0
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cpe:2.3:a:gofiber:fiber:2.23.0
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cpe:2.3:a:gofiber:fiber:2.24.0
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cpe:2.3:a:gofiber:fiber:2.25.0
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cpe:2.3:a:gofiber:fiber:2.26.0
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cpe:2.3:a:gofiber:fiber:2.27.0
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cpe:2.3:a:gofiber:fiber:2.28.0
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cpe:2.3:a:gofiber:fiber:2.29.0
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cpe:2.3:a:gofiber:fiber:2.3.0
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cpe:2.3:a:gofiber:fiber:2.3.1
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cpe:2.3:a:gofiber:fiber:2.3.2
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cpe:2.3:a:gofiber:fiber:2.3.3
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cpe:2.3:a:gofiber:fiber:2.30.0
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cpe:2.3:a:gofiber:fiber:2.31.0
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cpe:2.3:a:gofiber:fiber:2.32.0
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cpe:2.3:a:gofiber:fiber:2.33.0
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cpe:2.3:a:gofiber:fiber:2.34.0
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cpe:2.3:a:gofiber:fiber:2.34.1
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cpe:2.3:a:gofiber:fiber:2.35.0
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cpe:2.3:a:gofiber:fiber:2.36.0
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cpe:2.3:a:gofiber:fiber:2.37.0
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cpe:2.3:a:gofiber:fiber:2.37.1
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cpe:2.3:a:gofiber:fiber:2.38.0
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cpe:2.3:a:gofiber:fiber:2.38.1
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cpe:2.3:a:gofiber:fiber:2.39.0
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cpe:2.3:a:gofiber:fiber:2.4.0
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cpe:2.3:a:gofiber:fiber:2.4.1
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cpe:2.3:a:gofiber:fiber:2.40.0
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cpe:2.3:a:gofiber:fiber:2.40.1
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cpe:2.3:a:gofiber:fiber:2.41.0
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cpe:2.3:a:gofiber:fiber:2.42.0
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cpe:2.3:a:gofiber:fiber:2.43.0
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cpe:2.3:a:gofiber:fiber:2.44.0
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cpe:2.3:a:gofiber:fiber:2.45.0
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cpe:2.3:a:gofiber:fiber:2.46.0
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cpe:2.3:a:gofiber:fiber:2.47.0
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cpe:2.3:a:gofiber:fiber:2.48.0
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cpe:2.3:a:gofiber:fiber:2.49.0
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cpe:2.3:a:gofiber:fiber:2.49.1
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cpe:2.3:a:gofiber:fiber:2.49.2
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cpe:2.3:a:gofiber:fiber:2.5.0
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cpe:2.3:a:gofiber:fiber:2.50.0
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cpe:2.3:a:gofiber:fiber:2.51.0
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cpe:2.3:a:gofiber:fiber:2.52.0
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cpe:2.3:a:gofiber:fiber:2.52.1
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cpe:2.3:a:gofiber:fiber:2.52.2
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cpe:2.3:a:gofiber:fiber:2.52.3
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cpe:2.3:a:gofiber:fiber:2.52.4
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cpe:2.3:a:gofiber:fiber:2.52.5
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cpe:2.3:a:gofiber:fiber:2.52.6
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cpe:2.3:a:gofiber:fiber:2.52.7
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cpe:2.3:a:gofiber:fiber:2.52.8
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cpe:2.3:a:gofiber:fiber:2.6.0
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cpe:2.3:a:gofiber:fiber:2.7.0
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cpe:2.3:a:gofiber:fiber:2.7.1
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cpe:2.3:a:gofiber:fiber:2.8.0
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cpe:2.3:a:gofiber:fiber:2.9.0