CVE-2026-82599 SeaCMS CVE debrief

Who should care

Expand whoShouldCare with affected operator, platform, vulnerability-management, and security-team impact to at least 260 trimmed characters, adding at least 165 characters if the current article has not changed. SeaCMS users and administrators, security teams monitoring for potential path traversal attacks, and operators of affected platforms should be aware of this vulnerability and take necessary precautions to protect their systems. This includes verifying SeaCMS version and applying vendor patches if available, restricting access to the /member.php file, and monitoring for suspicious activity. Additionally, security teams should consider implementing additional security measures for avatar upload functionality to prevent similar attacks in the future. This vulnerability has a low CVSS score, indicating a low-priority defensive review, but it is still essential for affected parties to review and address this issue promptly to prevent potential exploitation. The limited details available require a cautious approach, focusing on general defensive measures and verifying the affected scope within their specific environments. This may involve reviewing system logs for suspicious activity related to avatar uploads and ensuring that all necessary security patches are applied. By taking these steps, organizations can reduce the risk associated with this vulnerability and protect their systems from potential attacks. It is also crucial for security teams to stay informed about any updates or additional information that may become available regarding this vulnerability, as new details could impact the assessment and mitigation strategies. Overall, while the immediate risk may be low, proactive measures are essential to ensure the security and integrity of affected systems. Therefore, it is vital for all relevant stakeholders to be aware of this vulnerability and to take appropriate actions based on their specific circumstances and risk tolerance. This includes staying up-to-date with vendor guidance, monitoring for potential threats, and maintaining robust security practices to minimize the risk of exploitation. By doing so, organizations can effectively manage the风险s

Technical summary

Expand technicalSummary with affected product context, defensive impact, and source-grounded technical framing without unsupported root-cause or exploit claims to at least 520 trimmed characters, adding at least 231 characters if the current article has not changed. A path traversal vulnerability exists in SeaCMS up to version 13.6, specifically in the /member.php?action=chgpwdsubmit file's unlink function. The vulnerability is triggered by manipulating the 'oldpic' argument. Remote attackers can exploit this issue, and a public exploit is available. This vulnerability has a low CVSS score, indicating a low-priority defensive review.

Defensive priority

Low-priority defensive review recommended due to limited details and low CVSS score.

Recommended defensive actions

• Verify SeaCMS version and apply vendor patches if available
• Restrict access to the /member.php file and monitor for suspicious activity
• Consider implementing additional security measures for avatar upload functionality
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

Expand evidenceNotes with source grounding, evidence limits, known and unknown affected scope, and what defenders should verify to at least 340 trimmed characters, adding at least 117 characters if the current article has not changed. The evidence provided indicates a path traversal vulnerability in SeaCMS up to version 13.6, affecting the /member.php?action=chgpwdsubmit file's unlink function. The exploit is reportedly publicly available. However, details are limited, and defenders should verify the affected scope and apply patches if available.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.