---
id: CVE-2020-7711
aliases:
  - GHSA-mqqv-chpx-vq25
  - CVE-2020-7731
  - GHSA-gq5r-cc4w-g8xf
  - GHSA-prjq-f4q3-fvfr
  - GO-2020-0046
  - SNYK-GOLANG-GITHUBCOMRUSSELLHAERINGGOSAML2-608302
title: >-
  goxmldsig vulnerable to crash on nil-pointer dereference caused by sending
  malformed XML signatures
summary: >-
  goxmldsig vulnerable to crash on nil-pointer dereference caused by sending
  malformed XML signatures
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: russellhaering
product: github.com/russellhaering/goxmldsig
ecosystem: go
affected:
  - github.com/russellhaering/goxmldsig < 1.1.1
  - github.com/russellhaering/gosaml2 < 0.7.0
patched:
  - github.com/russellhaering/goxmldsig 1.1.1
  - github.com/russellhaering/gosaml2 0.7.0
published: '2022-10-07'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-mqqv-chpx-vq25'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2020-7711'
  - url: 'https://github.com/russellhaering/gosaml2/issues/59'
  - url: 'https://github.com/russellhaering/goxmldsig/issues/48'
  - url: 'https://github.com/russellhaering/goxmldsig'
  - url: 'https://pkg.go.dev/vuln/GO-2020-0046'
  - url: 'https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMRUSSELLHAERINGGOXMLDSIG-608301'
tags:
  - osv
  - go
epss: 0.01769
epssPercentile: 0.77181
ingestedAt: '2026-07-09T18:56:36.652Z'
---

## Overview

This affects all versions of package github.com/russellhaering/goxmldsig prior to 1.1.1. There is a crash on nil-pointer dereference caused by sending malformed XML signatures. This issue is patched in version 1.1.1.

## Affected packages

- `github.com/russellhaering/goxmldsig < 1.1.1`
- `github.com/russellhaering/gosaml2 < 0.7.0`

## Remediation

Upgrade to a patched release:

- `github.com/russellhaering/goxmldsig 1.1.1`
- `github.com/russellhaering/gosaml2 0.7.0`