CVE-2023-51639Network attack vector

Authentication bypass via unchecked chart-download path

Published Nov 22, 2024 · Updated Nov 25, 2024

Path traversal in the downloadExportedChart action in Alltena GmbH Allegra before 7.5.1 allows remote attackers to bypass authentication. The action accepts a user-supplied path without validating that it remains inside the intended directory before passing it to file operations. No account or user interaction is required; public records do not identify the protected resources or operations made accessible after bypass.

CVSS severity9.8
Critical
EPSS probability2.49%
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 the downloadExportedChart action in Alltena GmbH Allegra before 7.5.1 allows remote attackers to bypass authentication. The action accepts a user-supplied path without validating that it remains inside the intended directory before passing it to file operations. No account or user interaction is required; public records do not identify the protected resources or operations made accessible after bypass.

The record

CVE
CVE-2023-51639
Published
Nov 22, 2024
Updated
Nov 25, 2024
Vendor
Alltena GmbH
Product
Allegra
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 25, 2024Record 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=7.5.0.24
  2. Affected versionversion=7.5.0build29

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Alltena GmbH · Allegraversion=7.5.0.24; version=7.5.0build29

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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