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CVE-2026-34607 emlog CVE debrief

CVE-2026-34607 is a path traversal vulnerability in Emlog, a website building system. The vulnerability exists in the emUnZip() function, which allows an authenticated admin to upload a crafted ZIP containing entries with ../ sequences, potentially leading to Remote Code Execution (RCE). This vulnerability has a high CVSS score of 7.2 and is considered High severity. Users of Emlog versions 2.6.2 and prior should apply patches or mitigations to prevent potential RCE attacks. The vulnerability can be exploited by uploading a malicious ZIP file, which can lead to writing arbitrary files to the server filesystem, including PHP webshells.

Vendor
emlog
Product
Unknown
CVSS
HIGH 7.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-03
Original CVE updated
2026-07-24
Advisory published
2026-04-03
Advisory updated
2026-07-24

Who should care

Users of Emlog versions 2.6.2 and prior should apply patches or mitigations to prevent potential RCE attacks. This includes administrators, security teams, and operators who manage Emlog deployments. Additionally, security teams should monitor for suspicious ZIP uploads and admin activity, and consider using Web Application Firewalls (WAFs) to detect and prevent attacks.

Technical summary

The emUnZip() function in Emlog versions 2.6.2 and prior does not sanitize ZIP entry names, allowing an authenticated admin to upload a crafted ZIP containing entries with ../ sequences. This can lead to writing arbitrary files to the server filesystem, including PHP webshells, achieving Remote Code Execution (RCE). The vulnerability has a CVSS score of 7.2 and is considered High severity. The affected product is Emlog, a website building system.

Defensive priority

High priority due to potential RCE impact.

Recommended defensive actions

  • Apply patches or updates to Emlog versions 2.6.2 and prior
  • Implement input validation and sanitization for ZIP entry names
  • Monitor for suspicious ZIP uploads and admin activity
  • Consider using Web Application Firewalls (WAFs) to detect and prevent attacks
  • 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

Evidence notes

The CVE record was published on 2026-04-03T23:17:04.423Z and last modified on 2026-07-24T22:10:00.140Z. The NVD entry is currently Analyzed. Evidence is limited to public sources and may not reflect the full scope or impact of the vulnerability. Defenders should verify affected systems and apply patches or mitigations accordingly.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-03T23:17:04.423Z and has not been modified since then. The NVD entry is currently Analyzed.