Medium

Silverstripe Hostname, IP and Protocol Spoofing through HTTP Headers

  • Disclosed: 23.05.2024
  • Updated: 11.10.2026 10:22

In it's default configuration, SilverStripe trusts all originating IPs to include HTTP headers for Hostname, IP and Protocol. This enables reverse proxies to forward requests while still retaining the original request information. Trusted IPs can be limited via the SS_TRUSTED_PROXY_IPS constant. Even with this restriction in place, SilverStripe trusts a variety of HTTP headers due to different proxy notations (e.g. X-Forwarded-For vs. Client-IP). Unless a proxy explicitly unsets invalid HTTP headers from connecting clients, this can lead to spoofing requests being passed through trusted proxies.

The impact of spoofed headers can include Director::forceSSL() not being enforced, SS_HTTPRequest->getIP() returning a wrong IP (disabling any IP restrictions), and spoofed hostnames circumventing any hostname-specific restrictions enforced in SilverStripe Controllers.

Regardless on running a reverse proxy in your hosting infrastructure, please follow the instructions on Secure Coding: Request hostname forgery in order to opt-in to these protections. If your website is not behind a reverse proxy, you might already be protected if using Apache with mod_env enabled, and you have the following line in your .htaccess file: SetEnv BlockUntrustedIPs true.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package silverstripe/framework < 3.1.17, >= 3.2.0, < 3.2.2, >= 3.3.0-beta1, < 3.3.0 3.1.17, 3.2.2, 3.3.0

References

CVSS score 6.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE)
-
Platform
Composer
Package
silverstripe/framework
Disclosed
23.05.2024
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-87pf-7x99-5xc4 - CC BY 4.0

Vulnerability history: silverstripe/framework

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (93) in the archive
Total entries
93
First → latest
11.2019 08.2026
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 13
  • Medium 69
  • Low 8

Disclosures per year

  1. 2019: 5
  2. 2020: 2
  3. 2021: 0
  4. 2022: 23
  5. 2023: 3
  6. 2024: 53
  7. 2025: 6
  8. 2026: 1
Severity:
  1. High · 8.8 ghsa-265q-222x-52m6 >= 4.0.0-rc1, < 4.0.6, >= 4.1.0-rc1, < 4.1.4, >= 4.2.0-rc1, < 4.2.3 4.0.6, 4.1.4, 4.2.3
  2. High · 7.5 ghsa-cwgq-83w5-8jfq >= 4.0.0-rc1, < 4.0.5, >= 4.1.0-rc1, < 4.1.3, >= 4.2.0-rc1, < 4.2.2 4.0.5, 4.1.3, 4.2.2
  3. High · 8.8 ghsa-vcg6-8fxc-x5cq >= 3.6.5-rc1, < 3.6.6, >= 4.0.3-rc1, < 4.0.4, >= 4.1.0-rc1, < 4.1.1 3.6.6, 4.0.4, 4.1.1
  4. High · 7.5 ghsa-vgxh-x8jv-hmff >= 4.0.3-rc1, < 4.0.4, >= 4.1.0-rc1, < 4.1.1 4.0.4, 4.1.1
  5. High · 7.5 ghsa-m5q3-mvcr-gc5m >= 4.0.0-rc1, < 4.0.4, >= 4.1.0-rc1, < 4.1.1 4.0.4, 4.1.1
  6. High · 8.8 ghsa-xx4r-5265-48j6 >= 3.5.0-rc1, < 3.5.6, >= 3.6.0-rc1, < 3.6.3, >= 4.0.0-rc1, < 4.0.1 3.5.6, 3.6.3, 4.0.1
  7. High · 8.0 ghsa-mqjc-x563-c9q8 >= 3.5.0-rc1, < 3.5.6, >= 3.6.0-rc1, < 3.6.3, >= 4.0.0-rc1, < 4.0.1 3.5.6, 3.6.3, 4.0.1
  8. High ghsa-7m2v-x7rg-5hm5 >= 3.5.0-rc1, < 3.5.5, >= 3.6.0-rc1, < 3.6.2 3.5.5, 3.6.2
  9. High · 7.5 ghsa-4qx8-j9vh-2628 >= 3.5.0-rc1, < 3.5.6, >= 3.6.0-rc1, < 3.6.3 3.5.6, 3.6.3
  10. Critical · 9.1 ghsa-8v6m-7f5v-hhx6 >= 3.1.18, < 3.1.19, >= 3.2.3, < 3.2.4, >= 3.3.1, < 3.3.2 3.1.19, 3.2.4, 3.3.2
  11. Silverstripe Hostname, IP and Protocol Spoofing through HTTP Headers this entry
    Medium · 6.5 ghsa-87pf-7x99-5xc4 < 3.1.17, >= 3.2.0, < 3.2.2, >= 3.3.0-beta1, < 3.3.0 3.1.17, 3.2.2, 3.3.0
  12. High · 7.2 ghsa-25gq-jvx2-vg9x >= 3.1.0, < 3.1.13 3.1.13
  13. High · 8.8 CVE-2022-38148 >= 4.0.0, < 4.10.11, >= 4.11.0, < 4.11.14 4.10.11, 4.11.14
  14. High · 7.5 CVE-2020-6164 >= 4.0.0, < 4.4.7, >= 4.5.0, < 4.5.4 4.4.7, 4.5.4
  15. High · 7.5 CVE-2020-9280 >= 4.0.0, < 4.4.6 4.4.6
  16. Critical · 9.8 CVE-2019-5715 >= 3.0.0, < 3.6.7, >= 4.0.0, < 4.0.7, >= 3.7.0, < 3.7.3, >= 4.1.0, < 4.1.5, >= 4.2.0, < 4.2.4, >= 4.3.0, < 4.3.1 3.6.7, 4.0.7, 3.7.3, 4.1.5, 4.2.4, 4.3.1
  17. Critical · 9.8 CVE-2019-12204 >= 4.1.0, < 4.3.5 4.3.5

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