All vulnerabilities
CVE-2026-101272

Incorrect session validation for API-created shredder exports

pretix
Open in ThreatlineRecord JSON
CVSS
2.3Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in2026.6.4Also 2026.7.3, 2026.8.1CVE List
Published28 Oct 2026Updated 28 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

The mechanism binding files generated during a shredding process to the authentication method is not working correctly and the same session token is used for all token-based API users. This is similar to an issue fixed in 2026.7.1 but was missed while creating the fix. Since the files are referred to by randomly generated UUIDs and only exist for a day, there is virtually no risk, but it renders the added protection mechanism useless. As part of the fix, we have also improved hardening of some other related code areas.

Text from CVE List

Affected versions 3

  • pretixaffected: all versions before 2026.6.4CVE List
  • pretixaffected: 2026.7.0 before 2026.7.3CVE List
  • pretixaffected: 2026.8.0 before 2026.8.1CVE List

References 1