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@blog.criminalip.io
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A critical authentication bypass vulnerability, CVE-2025-29927, has been discovered in Vercel's Next.js framework. The flaw resides in Next.js middleware, a feature designed to intercept incoming HTTP requests for tasks like authentication, logging, and request modification. This vulnerability allows attackers to circumvent middleware authorization checks, gaining unauthorized access to protected resources. Criminal IP identified over 520,000 assets potentially at risk, emphasizing the widespread impact of this flaw.
Next.js middleware is used for authentication/authorization, request modification, server-side redirects, and Content Security Policy (CSP) implementation. An attacker can bypass these middleware controls by adding a specially crafted `x-middleware-subrequest` header to their HTTP requests. This tricks the application into treating the request as an internal subrequest, effectively bypassing authorization checks. According to the report, the root cause of the vulnerability lies in the `beforeFiles` routing logic within Next.js. The vulnerability affects Next.js versions from 13.4 and above, but prior to 14.1.0. Vercel addressed the vulnerability in versions after v14.1.0-canary.35. Users are strongly advised to upgrade to Next.js version 14.1.0-canary.35 or later to mitigate the risk. Next.js deployments hosted on Vercel are automatically protected against this vulnerability, self-hosted Next.js applications remain vulnerable unless patched or mitigated. This issue can lead to serious security risks, including data exposure and application compromise. Recommended read:
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Rescana@Rescana
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CISA has issued an urgent warning regarding a critical authentication bypass vulnerability, CVE-2025-31161, in CrushFTP, a widely-used file transfer server solution. The agency has added this vulnerability to its Known Exploited Vulnerabilities (KEV) catalog, signaling that it is actively being exploited in the wild. This flaw allows attackers to bypass authentication mechanisms and potentially gain unauthorized administrative access to vulnerable CrushFTP servers, posing significant risks to both government agencies and private organizations. Federal cybersecurity officials are urging immediate action to mitigate the threat.
The vulnerability, which affects CrushFTP server versions before 10.8.4 and 11.3.1, stems from improper validation of authentication tokens in the CrushFTP login process. An attacker can manipulate HTTP request parameters to gain unauthorized administrative access. CISA’s advisory highlights that exploitation could lead to a full system compromise. Under Binding Operational Directive (BOD) 22-01, Federal Civilian Executive Branch (FCEB) agencies are mandated to remediate this vulnerability by April 28, 2025, emphasizing the severity of the risk. CISA strongly encourages all organizations, including private sector entities and state governments, to prioritize patching CVE-2025-31161 and adopt similar vulnerability management strategies. To mitigate the risk, organizations using CrushFTP should immediately apply available patches or updates issued by the software's developers. Additionally, reviewing system logs for any unusual activity is advised. The Cybersecurity and Infrastructure Security Agency emphasizes that this authentication bypass vulnerability represents a severe security risk, potentially allowing complete compromise of affected CrushFTP servers, and has observed sophisticated threat actors actively exploiting it to establish persistent access to critical systems. Recommended read:
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Rescana@Rescana
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A critical authentication bypass vulnerability, CVE-2025-31161 (previously tracked as CVE-2025-2825), has been identified in CrushFTP, a multi-protocol file transfer server. The vulnerability, which exists in versions 10.0.0 through 10.8.3 and 11.0.0 through 11.3.0, allows attackers to bypass authentication mechanisms, potentially gaining unauthorized access to sensitive data and system resources. CrushFTP privately alerted customers to the issue on March 21, 2025, urging them to apply available patches immediately. BleepingComputer reports that over 1,500 instances remain exposed.
Intrusions exploiting the CVE-2025-2825 vulnerability are already underway, following the emergence of a proof-of-concept exploit. Attackers can gain complete access to affected servers, manipulate files, upload malicious content, and even create admin-level user accounts. Indicators of Compromise include unauthorized access logs, unexpected modifications to user accounts, and unusual file uploads. As a mitigation strategy, CrushFTP recommended activating the demilitarized zone perimeter network option for those unable to promptly update their software. Recommended read:
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Pierluigi Paganini@Security Affairs
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Broadcom has issued security updates to address a high-severity authentication bypass vulnerability affecting VMware Tools for Windows. Tracked as CVE-2025-22230, the flaw stems from improper access control, potentially allowing a malicious actor with non-administrative privileges on a guest virtual machine to perform high-privilege operations. Discovered by Sergey Bliznyuk of Positive Technologies, the vulnerability impacts VMware Tools versions 11.x.x and 12.x.x.
Security experts are urging users to apply the updates promptly, as there are currently no known workarounds besides patching. The vulnerability has been assigned a CVSS score of 7.8 out of 10, highlighting its severity. It exclusively affects VMware Tools running on Windows operating systems, emphasizing the importance of immediate action for affected users. Recommended read:
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Divya@gbhackers.com
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www.scworld.com
, gbhackers.com
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Critical vulnerabilities in the ruby-saml library, tracked as CVE-2025-25291 and CVE-2025-25292, allow attackers to bypass authentication in applications using the library for Single Sign-On (SSO). These flaws stem from discrepancies in XML parsing between REXML and Nokogiri, potentially leading to account takeovers. An attacker possessing a valid signature from the targeted organization can craft SAML assertions to log in as any user.
The vulnerabilities were discovered during a security review by GitHub's Security Lab, prompting GitLab to release critical patches in versions 17.9.2, 17.8.5, and 17.7.7 for Community Edition and Enterprise Edition. Organizations are urged to upgrade to the latest ruby-saml version to mitigate the risk of authentication bypass and account hijacking. The ruby-saml library is used in various applications and products, including GitLab. Recommended read:
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Bill Toulas@BleepingComputer
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GitLab has released critical security updates to address multiple vulnerabilities in its Community Edition (CE) and Enterprise Edition (EE) platforms. The updates, included in versions 17.9.2, 17.8.5, and 17.7.7, fix nine vulnerabilities. Two of these are critical authentication bypass flaws (CVE-2025-25291 and CVE-2025-25292) within the ruby-saml library, used when SAML SSO authentication is enabled at the instance or group level. GitLab has already patched GitLab.com and will update GitLab Dedicated customers, but self-managed installations require immediate manual updates.
Exploitation of these flaws could allow attackers with access to a legitimate signed SAML document from an identity provider to impersonate any valid user, potentially leading to unauthorized access to sensitive repositories and data breaches. The issue stems from differences in XML parsing between REXML and Nokogiri. GitLab strongly advises all affected installations to upgrade to the latest versions as soon as possible to mitigate potential risks. Other vulnerabilities that were addressed are CVE-2025-27407, a high severity Ruby graphql vulnerability. Recommended read:
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