CVE-2026-13001Public exploitNetwork attack vector

Unauthenticated code execution via cache extension confusion

Published Jul 14, 2026 · Updated Jul 14, 2026

Arbitrary file upload in Podlove Podcast Publisher 4.5.1 and earlier allows remote attackers to execute code through image caching. In podlove_handle_cache_files, image validation uses the full source URL while Image::extract_file_extension uses only its parsed path, preserving .php when caching a polyglot. No account or user interaction is required; successful exploitation runs attacker-supplied PHP with the web server's privileges.

CVSS severity9.8
Critical
EPSS probability3.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in Podlove Podcast Publisher 4.5.1 and earlier allows remote attackers to execute code through image caching. In podlove_handle_cache_files, image validation uses the full source URL while Image::extract_file_extension uses only its parsed path, preserving .php when caching a polyglot. No account or user interaction is required; successful exploitation runs attacker-supplied PHP with the web server's privileges.

The record

CVE
CVE-2026-13001
Published
Jul 14, 2026
Updated
Jul 14, 2026
Vendor
Alexander Lueken
Product
Podlove Podcast Publisher
Classifications
CWE-20, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 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 <=4.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Alexander Lueken · Podlove Podcast Publisherversion=0 <=4.5.1

Published CVSS scores

9.8WordfenceCVSS:3.1/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.

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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-20Improper Input Validation
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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