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| Vulnerability ID | VCID-2etk-v7gt-pqhn |
| Aliases |
GHSA-2r3v-q9x3-7g46
GMS-2020-602 |
| Summary | Link injection in SimpleSAMLphp ### Background Several scripts part of SimpleSAMLphp display a web page with links obtained from the request parameters. This allows us to enhance usability, as the users are presented with links they can follow after completing a certain action, like logging out. ### Description The following scripts were not checking the URLs obtained via the HTTP request before displaying them as the target of links that the user may click on: - `www/logout.php` - `modules/core/www/no_cookie.php` The issue allowed attackers to display links targeting a malicious website inside a trusted site running SimpleSAMLphp, due to the lack of security checks involving the `link_href` and `retryURL` HTTP parameters, respectively. The issue was resolved by including a verification of the URLs received in the request against a white list of websites specified in the `trusted.url.domains` configuration option. ### Affected versions All SimpleSAMLphp versions prior to 1.14.4. ### Impact A remote attacker could craft a link pointing to a trusted website running SimpleSAMLphp, including a parameter pointing to a malicious website, and try to fool the victim into visiting that website by clicking on a link in the page presented by SimpleSAMLphp. ### Resolution Upgrade to the latest version. ### Credit This security issue was discovered and reported by John Page (hyp3rlinx). |
| Status | Published |
| Exploitability | None |
| Weighted Severity | None |
| Risk | None |
| Affected and Fixed Packages | Package Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 3.7 | https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-2r3v-q9x3-7g46 |
| generic_textual | LOW | https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-2r3v-q9x3-7g46 |
| cvssv3.1 | 3.7 | https://snyk.io/vuln/SNYK-PHP-SIMPLESAMLPHPSIMPLESAMLPHP-70160 |
| generic_textual | LOW | https://snyk.io/vuln/SNYK-PHP-SIMPLESAMLPHPSIMPLESAMLPHP-70160 |
| Reference id | Reference type | URL |
|---|---|---|
| https://snyk.io/vuln/SNYK-PHP-SIMPLESAMLPHPSIMPLESAMLPHP-70160 | ||
| GHSA-2r3v-q9x3-7g46 | https://github.com/advisories/GHSA-2r3v-q9x3-7g46 | |
| GHSA-2r3v-q9x3-7g46 | https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-2r3v-q9x3-7g46 |
| 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 |
| 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 |
No EPSS data available for this vulnerability.
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2026-06-04T16:19:45.047682+00:00 | GitLab Importer | Import | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/simplesamlphp/simplesamlphp/GMS-2020-602.yml | 38.6.0 |