API key disclosure via resourcePath host injection
Published Jul 1, 2026 · Updated Jul 1, 2026
SSRF in pretix-oppwa before 1.4.4 allows remote attackers to disclose an OPPWA API key via a crafted resourcePath parameter. The callback handler appends the unvalidated resourcePath value to a base URL lacking a trailing slash, allowing attacker-controlled authority text to replace the intended host. No pretix account is required; the outbound status request sends the payment-provider access token to the substituted server, exposing data available to that key.
Summary
What happened
SSRF in pretix-oppwa before 1.4.4 allows remote attackers to disclose an OPPWA API key via a crafted resourcePath parameter. The callback handler appends the unvalidated resourcePath value to a base URL lacking a trailing slash, allowing attacker-controlled authority text to replace the intended host. No pretix account is required; the outbound status request sends the payment-provider access token to the substituted server, exposing data available to that key.
The record
- CVE
- CVE-2026-13603
- Published
- Jul 1, 2026
- Updated
- Jul 1, 2026
- Vendor
- pretix GmbH
- Product
- pretix-oppwa
- Classifications
- CWE-918, CWE-20, CAPEC-37, CAPEC-664, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 1, 2026CVE publishedPublication date reported by the CVE source.
- Jul 1, 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?
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- Affected versionversion=0 <1.4.4
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What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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