TI-2026-65167 Aliases CVE-2026-101269 GHSA-2qwc-826w-vxph

Incorrect session validation for API-uploaded files

LOW 11CWE-287Published 2026-09-29 · Updated 2026-09-29

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: High
Attack requirements: Present
Impact type: Security bypass
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0022 12th percentileScored 2026-11-07

Fix Fixed pretix (pretix): 2026.5.5, 2026.6.2, 2026.7.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
pretix	pretix	0.0 to before 2026.5.5; 2026.6.0 to before 2026.6.2; 2026.7.0 to before 2026.7.1	2026.5.5, 2026.6.2, 2026.7.1	Patch available	CNA

pretix Vendorpretix Affected 0.0 to before 2026.5.5; 2026.6.0 to before 2026.6.2; 2026.7.0 to before 2026.7.1 Fixed in 2026.5.5, 2026.6.2, 2026.7.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:pretix:pretix::::::::	—	—	pretix

cpe:2.3:a:pretix:pretix:*:*:*:*:*:*:*:* Versions — — ·pretix

Remediation

Fix · CNA pretix (pretix) Fixed in 2026.5.5, 2026.6.2, 2026.7.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2026-09-29
pretix — pretix.eu/about/en/blog/20260929-release-2026-7-1
6 records Highest priority Priority LOW 6 LOW
Other records, highest priority first
- TI-2026-65165 Revenue information leakPriority LOW 19
- TI-2026-65169 OAuth credentials not disabled when application is disabledPriority LOW 10
- TI-2026-65168 HTML injectionPriority LOW 10
Show all 6 records → Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-101269
2026-10-03 Alias added: GHSA-2qwc-826w-vxph

References

Advisory 1

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

TI-2024-18268 pretix before 2024.1.1 mishandles file validation. CVSS 3.1CRITICAL 9.8
TI-2026-11524 SSRF with API key leak in pretix-oppwa CVSS 4.0CRITICAL 9.0
TI-2026-41416 Cross-site scripting in pretix CVSS 4.0HIGH 8.8
TI-2026-11523 Session takeover vulnerability CVSS 4.0HIGH 7.7
TI-2026-02082 Unsafe variable evaluation in email templates CVSS 4.0HIGH 7.5
TI-2026-02081 Unsafe variable evaluation in email templates CVSS 4.0HIGH 7.5

See all 38 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences