CVE-2026-9712Network attack vector

Cross-user file disclosure via unchecked download UUID

Published May 27, 2026 · Updated May 27, 2026

Authorization bypass in pretix allows remote authenticated users to download other users' temporary files through a download API. The endpoint accepts a UUID without checking that the referenced temporary file is marked for download and belongs to the requesting user. Exploitation requires low-privileged API access and prior knowledge of a valid, long random UUID, ordinarily obtainable only through a separate information leak such as exposed logs.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in pretix allows remote authenticated users to download other users' temporary files through a download API. The endpoint accepts a UUID without checking that the referenced temporary file is marked for download and belongs to the requesting user. Exploitation requires low-privileged API access and prior knowledge of a valid, long random UUID, ordinarily obtainable only through a separate information leak such as exposed logs.

The record

CVE
CVE-2026-9712
Published
May 27, 2026
Updated
May 27, 2026
Vendor
pretix GmbH
Product
pretix
Classifications
CWE-639, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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=2024.10.0 <2026.2.0
  2. Affected versionversion=2026.2.0 <2026.3.0 changes=[{"at":"2026.2.2","status":"unaffected"}]
  3. Affected versionversion=2026.3.0 <2026.4.0 changes=[{"at":"2026.3.2","status":"unaffected"}]
  4. Affected versionversion=2026.4.0 <2026.5.0 changes=[{"at":"2026.4.2","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

pretix GmbH · pretixversion=2024.10.0 <2026.2.0; version=2026.2.0 <2026.3.0 changes=[{"at":"2026.2.2","status":"unaffected"}]; version=2026.3.0 <2026.4.0 changes=[{"at":"2026.3.2","status":"unaffected"}]; version=2026.4.0 <2026.5.0 changes=[{"at":"2026.4.2","status":"unaffected"}]

Published CVSS scores

3.8rami.ioCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application

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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