CVE-2026-61639Network attack vector

Server-side code execution via unvalidated ZIP entries

Published Aug 31, 2026 · Updated Sep 1, 2026

Path traversal in ellite Wallos before 4.9.6 allows remote authenticated users to write files outside the database restore directory. The restore endpoint passes ZIP entry names to ZipArchive::extractTo() without rejecting parent-directory segments before extraction. Administrative access is required, and a crafted archive can place a PHP webshell in the webroot for server-side code execution.

CVSS severity8.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in ellite Wallos before 4.9.6 allows remote authenticated users to write files outside the database restore directory. The restore endpoint passes ZIP entry names to ZipArchive::extractTo() without rejecting parent-directory segments before extraction. Administrative access is required, and a crafted archive can place a PHP webshell in the webroot for server-side code execution.

The record

CVE
CVE-2026-61639
Published
Aug 31, 2026
Updated
Sep 1, 2026
Vendor
ellite
Product
Wallos
Classifications
CWE-22, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.9.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ellite · Wallosversion=< 4.9.6

Published CVSS scores

8.5GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1505.003Server Software Component: Web Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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