Security Resilience

CVE-2025-8891

CSRF in Oceanwp 4.0.9 – 4.1.1

Public PoCCSRF
Published
13 August 2025
Modified
17 June 2026
Patch / advisory
View advisory
CVSS Score v3.1 4.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS Score 0.0021 11th percentile
Risk Priority 35 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2025-8891 is a medium-severity CSRF (CWE-352) vulnerability in Oceanwp Oceanwp. Its CVSS base score is 4.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Internal Defacement (T1491.001); ranked at the 11th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and SC-23 (Session Authenticity) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

The OceanWP theme for WordPress is vulnerable to Cross-Site Request Forgery in versions 4.0.9 to 4.1.1. This is due to missing or incorrect nonce validation on the oceanwp_notice_button_click() function. This makes it possible for unauthenticated attackers to install the Ocean…

more

Extra plugin via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CWE(s)
CWE-352

Related Threats

MITRE ATT&CK Enterprise Techniques

T1491.001 Internal Defacement Impact
An adversary may deface systems internal to an organization in an attempt to intimidate or mislead users, thus discrediting the integrity of the systems.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-49164Same vendor: Oceanwp
CVE-2025-26545Shared CWE-352
CVE-2023-28618Shared CWE-352
CVE-2023-32587Shared CWE-352
CVE-2023-23984Shared CWE-352
CVE-2024-32728Shared CWE-352
CVE-2024-39657Shared CWE-352
CVE-2025-28881Shared CWE-352
CVE-2023-45317Shared CWE-352
CVE-2025-49895Shared CWE-352

Affected Assets

oceanwp
oceanwp
4.0.9 — 4.1.1

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V3.3.2
  • V3.5.1
  • V10.2.1

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement partial match

Access enforcement requires verifying that state-changing requests originate from the authenticated user rather than a forged cross-site source.

SC-23 Session Authenticity partial match

Protecting session authenticity prevents attackers from replaying or forging authenticated requests via the victim's browser.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
blocks

Secure SDLC practices directly require anti-CSRF controls such as tokens or SameSite attributes.

References