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pretix CVE-2026-57533

| EUVDEUVD-2026-39423 LOW
Basic XSS (CWE-80)
2026-06-25 rami.io GHSA-f658-prxw-vx8p
XSS Pretix
2.1
CVSS 4.0 · Vendor: rami.io

Severity by source

Vendor (rami.io) PRIMARY
2.1 LOW
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
3.7 LOW

Network-delivered but requires low-privilege auth and user interaction; CSP prevents script execution, limiting impact to phishing-grade HTML injection with no availability consequence.

3.1 AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
4.0 AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (rami.io).

CVSS VectorVendor: rami.io

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

2
Patch available
Jun 25, 2026 - 16:03 EUVD
Analysis Generated
Jun 25, 2026 - 15:22 vuln.today

DescriptionCVE.org

Malicious HTML content could be injected into the page pretix shows when redirection to an untrusted page occurs. Since this page has a Content-Security-Policy, this can mainly be used for phishing purposes.

AnalysisAI

HTML injection on the pretix untrusted-redirect warning page enables phishing attacks against end users. Affecting the open-source event ticketing platform (all versions prior to 2026.5.2), authenticated low-privileged users can embed malicious HTML content into the redirect interstitial page that pretix displays before forwarding visitors to external URLs. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privileged pretix account
Delivery
Embed malicious HTML in redirect URL parameter
Exploit
Send crafted pretix link to event attendees
Execution
Victim clicks link, views injected redirect warning page
Persist
Victim deceived by fake HTML content
Impact
Credentials or sensitive data harvested via phishing
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Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to hold a low-privileged authenticated account within the pretix instance (PR:L in CVSS vector) sufficient to create or modify redirect-capable content. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The official CVSS 4.0 score of 2.1 accurately reflects the constrained real-world impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated pretix user with organizer-level or equivalent low-privilege access crafts an event or redirect URL containing malicious HTML payloads targeting the untrusted-redirect warning page. A victim attendee following a legitimate-looking pretix link is shown the injected warning page, which now displays a convincing fake login prompt or spoofed content designed to harvest credentials. …
Remediation Upgrade pretix to version 2026.5.2 or later, as documented in the vendor release blog at https://pretix.eu/about/en/blog/20260625-release-2026-5-2/. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-57533 vulnerability details – vuln.today
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