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CVE-2026-7509
medium
CVSS 6.4
Cross-Site Scripting (XSS) in wordpress (CVE-2026-7509)
Summary
cross-site scripting in wordpress (CVE-2026-7509). Risk of unauthorized operations or information disclosure. Exploitable via ``before``.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-7509** has been found in wordpress.
Attackers can target a specific entry point like ``before`` over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.4/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "wordpress CVE-2026-7509" on the vendor's site.
CVE-2026-7509 (wordpress) — CWE-79 / CVSS v3 6.4
Attack vector: remote (network-reachable) / no user interaction
Attack surface: `before` / `after`
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**Cross-site scripting (XSS)** (CWE-79) exists in wordpress. Attackers reach the vulnerable code path via ``before`` without authentication.
📍 Affected scope
wordpress — . Attack surface: `before` / `after`.
🔥 Severity
Severity: Medium (CVSS 6.4/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'wordpress' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'wordpress' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `wordpress` を grep し、稼働しているサービス・バージョンを把握する。
-
7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
References
- web https://plugins.trac.wordpress.org/browser/kia-subtitle/tags/4.0.1/kia-subtitle.php#L329
- web https://plugins.trac.wordpress.org/browser/kia-subtitle/tags/4.0.1/kia-subtitle.php#L359
- web https://plugins.trac.wordpress.org/browser/kia-subtitle/tags/4.0.2/kia-subtitle.php#L369
- web https://plugins.trac.wordpress.org/browser/kia-subtitle/tags/4.0.2/kia-subtitle.php#L370
- web https://plugins.trac.wordpress.org/browser/kia-subtitle/trunk/kia-subtitle.php#L329
- web https://plugins.trac.wordpress.org/browser/kia-subtitle/trunk/kia-subtitle.php#L359
- web https://www.wordfence.com/threat-intel/vulnerabilities/id/a9a52097-0d85-4036-9b74-f35fea549607?source=cve
- web https://nvd.nist.gov/vuln/detail/CVE-2026-7509
- web https://github.com/advisories/GHSA-m4c4-9rgw-f76c