CVE-2025-4396Active Exploitation

MEDIUMCVSS 7.5 · HIGH

Exploitation ongoing with high activity in latest observed window (1 mentions)

Immediate actions

  • Prioritize remediation for affected systems immediately
  • Assume compromise if assets are exposed
  • Hunt for exploitation attempts and persistence artifacts
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

The Relevanssi – A Better Search plugin for WordPress is vulnerable to time-based SQL Injection via the cats and tags query parameters in all versions up to, and including, 4.24.4 (Free) and <= 2.27.5 (Premium) due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries to already existing queries that can be used to extract sensitive information from the database.

5.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-89

Priority

MEDIUM

Exploitation

ACTIVE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • Active exploitation appears in 2 classified signals
  • Exploit tooling references are present in monitored signal
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Active exploitation reported across 2 signals
  • Exploit tool or code specified in 1 signal
  • Technical details provided in 2 signals
  • Peaked 1d ago at 1 mentions (2026-04-13); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-13: 1Mentions · 2026-07-17: 1Exploit Tool / Code · 2026-07-17: 1Active Exploitation · 2026-04-13: 1Active Exploitation · 2026-07-17: 1Technical Details · 2026-04-13: 1Technical Details · 2026-07-17: 104-1307-17
Signal classification1 categories
Active Exploitation
2100.0%
Referenced assets4 URLs
Full discourse2 posts
  • Yusuf Can Çakır@Yusufcancakiir
    Active Exploitation

    Found an open directory hosting a layered financial fraud operation across three simultaneous tracks: a Magecart-style card skimmer chain, a mass CVE exploitation framework, and a trojan distributed through Chinese streaming software packaging. All of it feeding the same PII collection pipeline. The skimmer track starts with FOFA. The actor runs automated queries targeting WooCommerce, Magento, and Stripe-integrated checkout pages, sorting results into structured target lists by category: builder_woo_checkout, stripe_woo_checkout, magento_checkout, checkout_cdn_js. Output lands in pii_consolidated.csv, with a second batch file visible alongside it. This has been running in passes. The skimmer component is a WooCommerce and Stripe-targeted Magecart payload. Injection engine supports page-level download, mitmproxy transparent proxy, and browser console delivery. C2 receiver runs on the same host. Target profile: Stripe Elements checkout pages, WooCommerce wc-ajax endpoints. The exploitation track runs in parallel. poc_scanner.py drives 300 concurrent probes against FOFA-sourced targets through a three-stage pipeline: liveness check, service fingerprinting, then PoC verification. CVEs being actively weaponized: CVE-2026-21858 — n8n unauthenticated RCE, CVSS 10.0 CVE-2026-6815 — Casdoor path traversal to RCE, CVSS 9.8 CVE-2026-32604 — Spinnaker shell injection, CVSS 10.0 CVE-2026-34486 — Tomcat Tribes auth bypass to RCE, CVSS 9.8 CVE-2026-25212 — Percona PMM RCE, CVSS 9.9 CVE-2026-35273 — PeopleSoft unauthenticated SSRF to RCE, CVSS 9.8 CVE-2026-23744 — MCPJam Inspector unauthenticated RCE, CVSS 9.8 CVE-2026-42167 — ProFTPD CVE-2026-6182 — SQL injection auth bypass CVE-2025-24587, CVE-2025-4396 A separate WordPress track runs alongside: mass SQL injection via wp_sqli_mass.py, aggressive dump via wp_aggressive_dump.py, PhpMyAdmin brute-force against the same pool. The trojan track is socially engineered. 直播助手化.v2.exe presents as a legitimate Chinese streaming helper application. VMProtect 3.2–3.5 wrapping. 29/70 on VirusTotal at time of analysis. Family: flystudio, chinad, dlii. It ships with HPSocket4C.dll, pb.dll, pb64.dll, and gzip.dll as side-loaded components. The infection surface is Chinese-speaking streaming users who would recognize the product name as familiar tooling. C2 routes through v2ray. Two license spoofing servers complete the toolkit. bypass_server.py impersonates http://premium.dotbypasser.workers.dev, handling RSA-OAEP encrypted license exchange and returning forged validation responses with 10-year expiry timestamps. fake_auth_server.py covers a separate streaming platform, impersonating http://api.vmks.cn and related domains, returning fake authorization tokens. Both appear to serve tooling distribution rather than direct victim infrastructure. One additional finding on the C2 host: evidence of AI-assisted offensive operations. A DeepSeek API configuration points to http://api.deepseek.com through an Anthropic-compatible interface, and a structured offensive security framework containing 70+ purpose-built skill modules for vulnerability classes including SQLi, XSS, SSRF, RCE, IDOR, OAuth, SAML, cloud misconfiguration, Kubernetes, CI/CD, M365/Entra, VMware vCenter, and supply chain recon. The actor is running systematized, AI-assisted attack methodology. This pattern is increasingly documented across financially motivated operations. OPSEC failure on an otherwise capable operator. filter_cn.py is on the box and actively used. It strips Chinese IP ranges from FOFA output sets before exploitation runs begin. The actor is deliberately skipping domestic targets, a consistent behavioral marker across Chinese financially motivated operations. Additionally, the FOFA API credential is hardcoded in cleartext across the client scripts. Easy attribution anchor.

    Post summary

    The report details a large‑scale financial fraud operation that is actively exploiting multiple high‑severity CVEs via custom scripts, targeting e‑commerce and CMS platforms, and employing AI‑supported attack modules.

    215054404.8K
    1.6K followersView on X
  • CrowdSec@Crowd_Security
    Active Exploitation

    🚨 CVE-2025-4396 is under mass exploitation. Over 16,500 IPs are targeting a SQL injection flaw in the WordPress Relevanssi plugin. Automated attacks. Massive scale. Easy targets. 👇 Learn how it works &amp; how to protect your systems https://www.crowdsec.net/vulntracking-report/cve-2025-4396-wordpress-relevanssi-sql-injection https://t.co/6LnvqkeJfR

    Post summary

    The tweet reports widespread, automated exploitation of CVE‑2025‑4396 (a WordPress Relevanssi SQL injection flaw) impacting over 16,000 IPs, emphasizing the urgency for defensive measures.

    00010396
    19.5K followersView on X

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