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MEDIUM severity

CVE-2017-20164 — silverstripe-seed

MEDIUMFix: symbiote/silverstripe-seed@b065ebd

CVE-2017-20164 is a medium-severity (CVSS 6.1) Open Redirect vulnerability in symbiote/silverstripe-seed. A fix is available for symbiote/silverstripe-seed — see the affected versions and patch details below.

Symbiote Seed Open Redirect vulnerability

Also known asGHSA-wm32-3r4m-jvcc
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 31, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2017-20164.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs46th percentile — riskier than 46% of all scored CVEsHighest risk
0.00%0.35%0.70%1.04%0.3%0.5%May 26Sep 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘symbiote/silverstripe-seed

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

A vulnerability was found in Symbiote Seed up to 6.0.2. It has been classified as critical. Affected is the function onBeforeSecurityLogin of the file code/extensions/SecurityLoginExtension.php of the component Login. The manipulation of the argument URL leads to open redirect. It is possible to launch the attack remotely. Upgrading to version 6.0.3 is able to address this issue. The patch is identified as b065ebd82da53009d273aa7e989191f701485244. It is recommended to upgrade the affected component. VDB-217626 is the identifier assigned to this vulnerability.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistsymbiote/silverstripe-seedall versions6.0.3composer require symbiote/silverstripe-seed:^6.0.3

Affected Products

1 product · 1 configurations
Application
seedsymbiote
≥ 6.0.0 && < 6.0.3
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for symbiote/silverstripe-seed, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update symbiote/silverstripe-seed to 6.0.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-20164 is resolved across your whole dependency graph.

  3. Workarounds

    Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.

Frequently Asked Questions

A vulnerability was found in Symbiote Seed up to 6.0.2. It has been classified as critical. Affected is the function onBeforeSecurityLogin of the file code/extensions/SecurityLoginExtension.php of the component Login. The manipulation of the argument URL leads to open redirect. It is possible to launch the attack remotely. Upgrading to version 6.0.3 is able to address this issue. The patch is identified as b065ebd82da53009d273aa7e989191f701485244. It is recommended to upgrade the affected component. VDB-217626 is the identifier assigned to this vulnerability.
O3 Security · Impact-Aware SCA

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CVE-2017-20164: silverstripe Open Redirect — Fixed in 6.0.3