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Vulnerability details: VCID-dggq-bf45-aqga
Vulnerability ID VCID-dggq-bf45-aqga
Aliases CVE-2020-5226
GHSA-mj9p-v2r8-wf8w
Summary Cross-site Scripting Cross-site scripting in `SimpleSAMLphp`. The `www/erroreport.php` script allows error reports to be submitted and sent to the system administrator. Starting with `SimpleSAMLphp`, a new `SimpleSAML\Utils\EMail` class was introduced to handle sending emails, implemented as a wrapper of an external dependency. This new wrapper allows us to use Twig templates in order to create the email sent with an error report. Since Twig provides automatic escaping of variables, manual escaping of the free-text field in `www/errorreport.php` was removed to avoid double escaping. However, for those not using the new user interface yet, an email template is hardcoded into the class itself in plain PHP. Since no escaping is provided in this template, it is then possible to inject HTML inside the template by manually crafting the contents of the free-text field.
Status Published
Exploitability 0.5
Weighted Severity 4.0
Risk 2.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00337 https://api.first.org/data/v1/epss?cve=CVE-2020-5226
cvssv3.1 4.4 https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-mj9p-v2r8-wf8w
generic_textual LOW https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-mj9p-v2r8-wf8w
cvssv3.1 4.4 https://nvd.nist.gov/vuln/detail/CVE-2020-5226
generic_textual LOW https://nvd.nist.gov/vuln/detail/CVE-2020-5226
cvssv3.1 4.4 https://simplesamlphp.org/security/202001-01
generic_textual LOW https://simplesamlphp.org/security/202001-01
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-5226
https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-mj9p-v2r8-wf8w
https://simplesamlphp.org/security/202001-01
CVE-2020-5226 https://nvd.nist.gov/vuln/detail/CVE-2020-5226
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-mj9p-v2r8-wf8w
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2020-5226
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://simplesamlphp.org/security/202001-01
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.56783
EPSS Score 0.00337
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:19:44.935277+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/simplesamlphp/simplesamlphp/CVE-2020-5226.yml 38.6.0