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CVE Record

CVE-2018-17586: The WP Fastest Cache plugin 0.8.8.5 for WordPress has XSS via the rules[0][content] parameter in a wpfc_sav...

The WP Fastest Cache plugin 0.8.8.5 for WordPress has XSS via the rules[0][content] parameter in a wpfc_save_timeout_pages action.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-17586 is a stored cross-site scripting issue in WP Fastest Cache 0.8.8.5 for WordPress. The available sources indicate attacker-controlled content could be saved through a plugin action and later rendered to users with browser-side script execution.

Executive priority

Treat this as a moderate web-application risk for any WordPress estate using the affected plugin version. Prioritize internet-facing or business-critical sites, but avoid emergency escalation unless local exposure or exploitation evidence is found.

Technical view

The CVE describes XSS through the rules[0][content] parameter in the wpfc_save_timeout_pages action. Public references also describe CSRF and multiple stored XSS in WP Fastest Cache, but the bundle does not provide CVSS, CWE, fixed version, or complete authentication details.

Likely exposure

Exposure is likely limited to WordPress sites running WP Fastest Cache version 0.8.8.5, especially where the vulnerable timeout-pages configuration path is reachable. The provided CVE metadata lists no broader affected range.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. Stored XSS can support credential theft, admin-session abuse, or content tampering, but practical impact depends on who can reach the vulnerable action and who views saved content.

Researcher notes

Evidence is thin: the CVE record identifies the vulnerable parameter and action, while references indicate stored XSS and CSRF context. No CVSS, CWE, patch version, or exploitation status is provided in the bundle, so validation should focus on version and reachable configuration paths.

Mitigation direction

  • Inventory WordPress sites for WP Fastest Cache 0.8.8.5.
  • Check WP Fastest Cache vendor guidance for the fixed version or workaround.
  • Update, remove, or disable the plugin according to vendor guidance.
  • Restrict administrative access and enforce strong WordPress session protections.
  • Review cached-page and timeout-page settings for unexpected content.

Validation and detection

  • Confirm installed WP Fastest Cache versions across managed WordPress sites.
  • Review plugin changelogs or vendor advisories for CVE-2018-17586 coverage.
  • Check web and WordPress logs for suspicious wpfc_save_timeout_pages activity.
  • Inspect relevant plugin configuration for unexpected script-like content.
  • Confirm remediation by verifying the plugin is no longer version 0.8.8.5.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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CVE-2018-17586 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.