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CVE-2017-20164

21
FAUCET Score

CVE-2017-20164 is a critical open redirect vulnerability affecting Symbiote Seed versions up to 6.0.2. It resides in the onBeforeSecurityLogin function within the Login component, allowing remote attackers to manipulate the URL argument. This vulnerability has a CVSS score of 6.1 (Medium) due to its network-based attack vector, low attack complexity, and potential for limited confidentiality and integrity impact. While no active exploitation, public exploit code, or significant community discussion has been observed, upgrading to Symbiote Seed 6.0.3 is recommended to mitigate this issue.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0.0, < 6.0.3CPE matchmatch criteria
cpe:2.3:a:symbiote:seed:*:*:*:*:*:silverstripe:*:*

CVSS Data

CVSS version used by this source: 3.1

6.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 44th percentile among its peer group of 26,209 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: symbiote/silverstripe-seedFixed in: 6.0.3
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-wm32-3r4m-jvccmedium

Symbiote Seed Open Redirect vulnerability

Jan 7, 2023

References

github.com / symbiote/silverstripe-seed/commit/b065ebd82da53009d273aa7e989191f701485244
Patch
github.com / symbiote/silverstripe-seed/releases/tag/6.0.3
Release Notes
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry