CVE-2026-101269 PUBLISHED

Incorrect session validation for API-uploaded files

Assigner: rami.io
Reserved: 28.09.2026 Published: 29.09.2026 Updated: 29.09.2026

The mechanism binding API-uploaded files to the uploader's authentication method is not working correctly and the same session token is used for all token-based API users. Since API-uploaded files are refered to by randomly generated UUIDs and only exist for a day, there is virtually no risk, but it renders the added protection mechanism useless.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
CVSS Score: 2.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	Low
Attack Complexity	High	Integrity	Low	Integrity	Low
Attack Requirements	Present	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	pretix
Product	pretix
Versions	Default: unaffected affected from 0.0 to 2026.5.5 (excl.) affected from 2026.6.0 to 2026.6.2 (excl.) affected from 2026.7.0 to 2026.7.1 (excl.)

Credits

Wenhao Wu of Southeast University finder

References

https://pretix.eu/about/en/blog/20260929-release-2026-7-1/