Security readout for executives and security teams
Plain-English summary
This issue affects older Recurly Ruby client gem versions. A flaw in Resource#find could let attacker-influenced input make the server request unintended internal or external resources. The reported impact includes possible exposure of API keys or other critical resources.
Executive priority
Prioritize remediation for systems that handle billing, subscriptions, or payment-adjacent workflows using the Recurly Ruby client. The main business risk is credential or internal resource exposure from affected application servers.
Technical view
CVE-2017-0905 is a CWE-918 server-side request forgery issue in the Recurly Client Ruby Library Resource#find method. The CVE lists fixed releases across the 2.x branches, ending before 2.11.3. No CVSS score or active exploitation evidence is provided in the bundle.
Likely exposure
Exposure is likely limited to Ruby applications using vulnerable recurly gem versions and passing attacker-controlled or weakly validated values into Resource#find.
Exploitation context
The source bundle does not show KEV listing or active exploitation. The public HackerOne report and Recurly/GitHub references support the vulnerability and fix history, but not current exploitation.
Researcher notes
Focus review on data flow into Resource#find and whether user-controlled values can influence request targets. Evidence confirms vulnerable version ranges and the affected method, but the bundle lacks CVSS detail and exploitation telemetry.
Mitigation direction
- Upgrade the recurly Ruby gem to the fixed version for your branch.
- Use Recurly's Ruby updates page to confirm the appropriate supported release.
- Avoid passing untrusted input into Resource#find until upgraded.
- Review and rotate Recurly API keys if compromise is suspected.
- Restrict outbound server access to sensitive internal resources where feasible.
Validation and detection
- Check Gemfile.lock for the installed recurly gem version.
- Search application code for Resource#find usage.
- Confirm any user-controlled identifiers are validated before lookup.
- Verify the deployed artifact uses a fixed Recurly client version.
- Review logs for unusual outbound requests from affected applications.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-918: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-0905 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://dev.recurly.com/page/ruby-updatesCVE reference · x_refsource_CONFIRM
- https://hackerone.com/reports/288635CVE reference · x_refsource_MISC
- https://github.com/recurly/recurly-client-ruby/commit/1bb0284d6e668b8b3d31167790ed6db1f6ccc4beCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Server-Side Request Forgery (SSRF)
Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.