VulnerableCode Package Details - pkg:deb/debian/golang-github-gorilla-schema@1.2.0-2?distro=trixie

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Vulnerability	Summary	Fixed by
VCID-fcfw-7u4r-ebf8 Aliases: CVE-2024-37298 GHSA-3669-72x9-r9p3	Potential memory exhaustion attack due to sparse slice deserialization ### Details Running `schema.Decoder.Decode()` on a struct that has a field of type `[]struct{...}` opens it up to malicious attacks regarding memory allocations, taking advantage of the sparse slice functionality. For instance, in the Proof of Concept written below, someone can specify to set a field of the billionth element and it will allocate all other elements before it in the slice. In the local environment environment for my project, I was able to call an endpoint like `/innocent_endpoint?arr.10000000.X=1` and freeze my system from the memory allocation while parsing `r.Form`. I think [this line](https://github.com/gorilla/schema/blob/main/decoder.go#L223) is responsible for allocating the slice, although I haven't tested to make sure, so it's just an educated guess. ### Proof of Concept The following proof of concept works on both v1.2.0 and v1.2.1. I have not tested earlier versions. ```go package main import ( "fmt" "github.com/gorilla/schema" ) func main() { dec := schema.NewDecoder() var result struct { Arr []struct{ Val int } } if err := dec.Decode(&result, map[string][]string{"arr.1000000000.Val": {"1"}}); err != nil { panic(err) } fmt.Printf("%#+v\n", result) } ``` ### Impact Any use of `schema.Decoder.Decode()` on a struct with arrays of other structs could be vulnerable to this memory exhaustion vulnerability. There seems to be no possible solution that a developer using this library can do to disable this behaviour without fixing it in this project, so all uses of Decode that fall under this umbrella are affected. A fix that doesn't require a major change may also be harder to find, since it could break compatibility with some other intended use-cases.	1.4.1-1 Affected by 0 other vulnerabilities.

Vulnerability

Summary

Fixed by

VCID-fcfw-7u4r-ebf8
Aliases:
CVE-2024-37298
GHSA-3669-72x9-r9p3

Potential memory exhaustion attack due to sparse slice deserialization ### Details Running `schema.Decoder.Decode()` on a struct that has a field of type `[]struct{...}` opens it up to malicious attacks regarding memory allocations, taking advantage of the sparse slice functionality. For instance, in the Proof of Concept written below, someone can specify to set a field of the billionth element and it will allocate all other elements before it in the slice. In the local environment environment for my project, I was able to call an endpoint like `/innocent_endpoint?arr.10000000.X=1` and freeze my system from the memory allocation while parsing `r.Form`. I think [this line](https://github.com/gorilla/schema/blob/main/decoder.go#L223) is responsible for allocating the slice, although I haven't tested to make sure, so it's just an educated guess. ### Proof of Concept The following proof of concept works on both v1.2.0 and v1.2.1. I have not tested earlier versions. ```go package main import ( "fmt" "github.com/gorilla/schema" ) func main() { dec := schema.NewDecoder() var result struct { Arr []struct{ Val int } } if err := dec.Decode(&result, map[string][]string{"arr.1000000000.Val": {"1"}}); err != nil { panic(err) } fmt.Printf("%#+v\n", result) } ``` ### Impact Any use of `schema.Decoder.Decode()` on a struct with arrays of other structs could be vulnerable to this memory exhaustion vulnerability. There seems to be no possible solution that a developer using this library can do to disable this behaviour without fixing it in this project, so all uses of Decode that fall under this umbrella are affected. A fix that doesn't require a major change may also be harder to find, since it could break compatibility with some other intended use-cases.

1.4.1-1
Affected by 0 other vulnerabilities.

Vulnerability	Summary	Aliases
This package is not known to fix vulnerabilities.

Vulnerability

Summary

Aliases

This package is not known to fix vulnerabilities.

Date	Actor	Action	Vulnerability	Source	VulnerableCode Version
2026-04-03T07:25:43.023697+00:00	Debian Importer	Affected by	VCID-fcfw-7u4r-ebf8	https://security-tracker.debian.org/tracker/data/json	38.1.0

2026-04-03T07:25:43.023697+00:00

Debian Importer

Affected by

VCID-fcfw-7u4r-ebf8

https://security-tracker.debian.org/tracker/data/json

38.1.0

Next non-vulnerable version	1.4.1-1
Latest non-vulnerable version	1.4.1-1
Risk	4.0