CVE-2026-18028Network attack vector

Authenticated event modification via unchecked quick setup request

Published Jul 28, 2026 · Updated Jul 28, 2026

Authorization bypass in pretix before 2026.4.6, 2026.5.0 through 2026.5.3, and 2026.6.0 allows remote authenticated users to alter events. The event quick setup view accepts a request for a chosen event without enforcing the caller's configuration-change permission. Exploitation requires limited organizer-level access, an otherwise unconfigured event, and a well-timed request; it can create products or quotas and alter bank-transfer or Stripe settings.

CVSS severity2.3
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Authorization bypass in pretix before 2026.4.6, 2026.5.0 through 2026.5.3, and 2026.6.0 allows remote authenticated users to alter events. The event quick setup view accepts a request for a chosen event without enforcing the caller's configuration-change permission. Exploitation requires limited organizer-level access, an otherwise unconfigured event, and a well-timed request; it can create products or quotas and alter bank-transfer or Stripe settings.

The record

CVE
CVE-2026-18028
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
pretix GmbH
Product
pretix
Classifications
CWE-639, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 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 <2026.4.6
  2. Affected versionversion=2026.5.0 <2026.5.4
  3. Affected versionversion=2026.6.0 <2026.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

pretix GmbH · pretixversion=0 <2026.4.6; version=2026.5.0 <2026.5.4; version=2026.6.0 <2026.6.1

Published CVSS scores

2.3rami.ioCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA: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.

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo