# CVE-2025-71454: vtenext before 25.02.2 CSRF Protection Bypass via HTTP Method Tampering

Status: published. Published: 2026-11-04. Updated: 2026-11-04.

vtenext before 25.02.2 contains a cross-site request forgery protection bypass because csrf_check() in include/utils/VteCsrf.php skips __csrf_token validation for non-POST requests. Attackers can induce a logged-in user to open a crafted link sending state-changing GET requests, which handlers read from $_REQUEST, performing actions as that user.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- vtenext / vtenext: ≥ 0; < 25.02.2 (affected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-352

## Exploit evidence

- exploit: https://blog.sicuranext.com/vtenext-25-02-a-three-way-path-to-rce/ (CNA: VulnCheck)

## References

- https://blog.sicuranext.com/vtenext-25-02-a-three-way-path-to-rce/ (CNA: VulnCheck; third-party-advisory, exploit)

- https://0xbro.red/posts/vtenext-25-02-a-three-way-path-to-rce/ (CNA: VulnCheck; technical-description)

- https://usermanual.vtenext.com/books/release-notes-history/page/vtenext-25022-release-note (CNA: VulnCheck; release-notes)

- https://www.vulncheck.com/advisories/vtenext-before-25.02.2-csrf-protection-bypass-via-http-method-tampering (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2025-71454; retrieved 2026-11-04; source updated 2026-11-04

Revision: 11779d5cf45160b135db7cbb91c52acd4c3ed61617af99911c73138837204aad

Canonical: https://y2.dev/cve/CVE-2025-71454

## 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.