# CVE-2026-119070: Optimole <= 4.2.17 - Unauthenticated Stored Cross-Site Scripting via Comment Content via Backslash-Escaped Unicode in URL Replacer

Status: published. Published: 2026-11-07. Updated: 2026-11-07.

The Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 4.2.17 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit requires the plugin to be in its normal connected state (cdn_key and cdn_secret configured) with the image replacer enabled, which is the default post-setup configuration; the stored payload bypasses all WordPress comment sanitization filters because it contains no HTML metacharacters at storage time — the characters are produced only by Optimole's own decoder at render time.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- optimole / Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization: ≥ 0; ≤ 4.2.17 (affected, semver). Source: CNA: Wordfence

## Severity and prioritization

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N; source: CNA: Wordfence

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/12ec2c2f-a86c-4b8f-b7fd-5917e31e1cd0?source=cve (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.17/inc/url_replacer.php#L92 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.17/inc/url_replacer.php#L86 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.17/inc/manager.php#L770 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.17/inc/manager.php#L889 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.17/inc/config.php#L62 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/optimole-wp/tags/4.2.18 (CNA: Wordfence)

## Provenance

- CNA: Wordfence: https://www.cve.org/CVERecord?id=CVE-2026-119070; retrieved 2026-11-07; source updated 2026-11-07

Revision: 7316750a6e3b315db8d6f5eb402db47671888a5bfe0d908b8310652a3e768901

Canonical: https://y2.dev/cve/CVE-2026-119070

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.