CVE-2026-9712 Insecure direct object reference
Attackers with valid UUIDs can access unauthorized export files due to missing ownership verification in the pretix API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-9712?
CVE-2026-9712 is a low-severity vulnerability in pretix, published on 27 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
When 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-9712?
3 open source packages ship an affected version, including pretix.
| Package | Affected | Fixed in |
|---|---|---|
pretix PyPI | All versions | 2026.4.2 |
pretix PyPI | All versions | 2026.4.2 |
pretix PyPI | All versions | 2026.4.2 |
How do I fix CVE-2026-9712?
Upgrade pretix to 2026.4.2 or later.
Is CVE-2026-9712 being exploited?
There is no known exploitation of CVE-2026-9712 in the wild and no public exploit code.
Sources
Also known as GHSA-72p9-6vv6-gvqh, PYSEC-2026-2960.