CVE-2026-34413Public exploitNetwork attack vector

Unauthenticated file operations via unterminated redirect

Published Apr 22, 2026 · Updated Apr 22, 2026

Missing authentication in Xerte Online Toolkits 3.15 and earlier allows remote attackers to perform unauthorized file operations. The elFinder connector sends unauthenticated callers an HTTP redirect but fails to terminate PHP execution, so their requests still reach file-operation handlers. No account or user interaction is required, but the public exploit chain requires a valid username and combines separate path-traversal and extension-filter flaws to obtain code execution and arbitrary file read.

CVSS severity8.8
High
EPSS probability3.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Xerte Online Toolkits 3.15 and earlier allows remote attackers to perform unauthorized file operations. The elFinder connector sends unauthenticated callers an HTTP redirect but fails to terminate PHP execution, so their requests still reach file-operation handlers. No account or user interaction is required, but the public exploit chain requires a valid username and combines separate path-traversal and extension-filter flaws to obtain code execution and arbitrary file read.

The record

CVE
CVE-2026-34413
Published
Apr 22, 2026
Updated
Apr 22, 2026
Vendor
The Xerte Project
Product
Xerte Online Toolkits
Classifications
CWE-497, CAPEC-170, CAPEC-694, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <02661be88cc369325ea01b508086bde7fbfec805
  2. Affected versionversion=0 <17e4f945fe6a3400fa88c01eda18c1075ee4a212
  3. Affected versionversion=0 <507d55c5e91bf9310b5b1c7fad8aebfef902ad23
  4. Affected versionversion=3.13.0
  5. Affected versionversion=3.14.0
  6. Affected versionversion=3.15.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Xerte Project · Xerte Online Toolkitsversion=0 <02661be88cc369325ea01b508086bde7fbfec805; version=0 <17e4f945fe6a3400fa88c01eda18c1075ee4a212; version=0 <507d55c5e91bf9310b5b1c7fad8aebfef902ad23; version=3.13.0; version=3.14.0; version=3.15.0

Published CVSS scores

8.8VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
8.6VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere
CAPEC-170Web Application Fingerprinting
CAPEC-694System Location Discovery
T1190Exploit Public-Facing Application

Public exploit references

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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