CVE-2026-2343Public exploitNetwork attack vector

Unauthenticated invoice disclosure via predictable ZIP filenames

Published Mar 25, 2026 · Updated Mar 25, 2026

Information disclosure in PeproDev Ultimate Invoice 2.2.5 and earlier allows remote attackers to download invoice ZIP archives. The bulk-download action writes exported invoice PDFs to a web-accessible zip_temp directory using filenames derived from the date and time, leaving only the seconds value to enumerate. An administrator must first generate a bulk archive; unauthenticated retrieval then exposes the selected invoices and their PII.

CVSS severity5.3
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in PeproDev Ultimate Invoice 2.2.5 and earlier allows remote attackers to download invoice ZIP archives. The bulk-download action writes exported invoice PDFs to a web-accessible zip_temp directory using filenames derived from the date and time, leaving only the seconds value to enumerate. An administrator must first generate a bulk archive; unauthenticated retrieval then exposes the selected invoices and their PII.

The record

CVE
CVE-2026-2343
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
Pepro Development Group
Product
PeproDev Ultimate Invoice
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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=0 <=2.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Pepro Development Group · PeproDev Ultimate Invoiceversion=0 <=2.2.5

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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