CVE-2026-2946: XSS in rymcu forest
Platform
java
Component
rymcu-forest
Fixed in
0.0.2
0.0.3
0.0.4
0.0.5
0.0.6
CVE-2026-2946 is a cross-site scripting (XSS) vulnerability affecting rymcu forest versions 0.0.1 through 0.0.5. This vulnerability resides within the XssUtils.replaceHtmlCode function, impacting Article Content, Comments, and Portfolio sections. A public exploit is available, making it a potential risk for exposed systems. The vendor has not responded to early disclosure attempts.
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Impact and Attack Scenarios
Successful exploitation of CVE-2026-2946 allows an attacker to inject malicious scripts into web pages viewed by other users of rymcu forest. This can lead to session hijacking, defacement of the website, or redirection to malicious sites. The attacker could potentially steal sensitive user data, including credentials, or perform actions on behalf of the victim. Given the public availability of an exploit, the risk of exploitation is elevated, particularly if the application is publicly accessible and the vulnerability is not addressed promptly.
Exploitation Context
CVE-2026-2946 has been publicly disclosed, and a proof-of-concept exploit is available. This significantly increases the likelihood of exploitation. The vulnerability is currently not listed on KEV or EPSS, suggesting a low to medium probability of active exploitation, but the public exploit makes it a high priority for remediation. The CVE was published on 2026-02-22.
Threat Intelligence
Exploit Status
EPSS
0.03% (7% percentile)
CISA SSVC
CVSS Vector
What do these metrics mean?
- Attack Vector
- Network — remotely exploitable over the internet. No physical or local access required. Widest attack surface.
- Attack Complexity
- Low — no special conditions required. Attacker can exploit reliably without depending on rare configurations or timing.
- Privileges Required
- Low — any valid user account is sufficient. Basic authenticated access required.
- User Interaction
- Required — victim must take an action: open a file, click a link, or visit a crafted page.
- Scope
- Unchanged — impact is limited to the vulnerable component itself.
- Confidentiality
- None — no confidentiality impact. Attacker cannot read protected data.
- Integrity
- Low — attacker can modify some data with limited scope or impact.
- Availability
- None — no availability impact. Service remains fully operational.
Affected Software
Weakness Classification (CWE)
Timeline
- Reserved
- Published
- Modified
- EPSS updated
Mitigation and Workarounds
The primary mitigation for CVE-2026-2946 is to upgrade rymcu forest to a version containing a fix. Since no fixed version is provided, consider implementing input validation and output encoding on user-supplied data within the Article Content, Comments, and Portfolio sections. Employ a Web Application Firewall (WAF) with XSS filtering rules to block malicious payloads. Regularly scan the application for XSS vulnerabilities using automated tools. After upgrade (or implementation of workarounds), thoroughly test the affected areas to confirm the vulnerability is no longer exploitable.
How to fix
Update to a patched version that is not vulnerable to XSS attacks. Since the vendor has not responded, it is recommended to seek alternatives or implement additional security measures to mitigate the risk of XSS in the affected code.
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Frequently asked questions
What is CVE-2026-2946 — XSS in rymcu forest?
CVE-2026-2946 is a cross-site scripting (XSS) vulnerability in rymcu forest versions 0.0.1–0.0.5, affecting Article Content/Comments/Portfolio. It allows attackers to inject malicious scripts.
Am I affected by CVE-2026-2946 in rymcu forest?
You are affected if you are using rymcu forest versions 0.0.1 through 0.0.5 and have not yet upgraded or implemented mitigating controls.
How do I fix CVE-2026-2946 in rymcu forest?
Upgrade rymcu forest to a patched version (if available). If no patch is available, implement input validation and output encoding, and consider using a WAF.
Is CVE-2026-2946 being actively exploited?
A public exploit exists, increasing the likelihood of exploitation. Monitor your systems closely and prioritize remediation.
Where can I find the official rymcu forest advisory for CVE-2026-2946?
Due to the vendor's lack of response, an official advisory may not be available. Monitor security news sources and community forums for updates.
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