Insecure direct object reference

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Summary

CVECVE-2026-9712
StatePUBLISHED
Assignerrami.io
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 15:16:36 UTC
Updated2026-05-27 19:59:03 UTC
DescriptionWhen creating an export through the pretix API, API clients are returned an UUID value for their export job (a long, random string like 35742818-c375-4d15-839f-d49aecce94d6). Using this UUID, the API client can then request the actual file for download. The same kind of UUID is used in other places in pretix when temporary files are generated for internal use or download. One remaining API endpoint, however, wrongfully did not verify if the UUID used for download actually belongs to a file that is supposed to be downloadable and belongs to the correct user. In reality, this is hard to exploit because an attacker would need to have access to a valid UUID for the file they desire which is unlikely to happen without a separate security problem giving them access to logs etc.

Risk And Classification

Primary CVSS: v4.0 3.8 LOW from 655498c3-6ec5-4f0b-aea6-853b334d05a6

CVSS: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/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

EPSS: 0.000380000 probability, percentile 0.118400000 (date 2026-06-01)

Problem Types: CWE-639 | CWE-639 CWE-639 Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
4.0655498c3-6ec5-4f0b-aea6-853b334d05a6Secondary3.8LOWCVSS: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/C...
4.0CNACVSS3.8LOWCVSS: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 v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Sub Conf.
High
Sub Integrity
None
Sub Availability
None

CVSS: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/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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Pretix Pretix affected 2024.10.0 2026.2.0 python Not specified
CNA Pretix Pretix affected 2026.2.0 2026.3.0 python Not specified
CNA Pretix Pretix affected 2026.3.0 2026.4.0 python Not specified
CNA Pretix Pretix affected 2026.4.0 2026.5.0 python Not specified

References

ReferenceSourceLinkTags
pretix.eu/about/en/blog/20260527-release-2026-4-2 655498c3-6ec5-4f0b-aea6-853b334d05a6 pretix.eu
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Deepjyoti Roy (en)

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