9.1Critical
Zammad Zammad
CVE-2024-33668
An issue was discovered in Zammad before 6.3.0. The Zammad Upload Cache uses insecure, partially guessable FormIDs to identify content. An attacker could try to brute force them to upload malicious content to article drafts they have no access to.
What this means for your business
- It affects Zammad. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.4% chance of attack attempts being seen in the next 30 days, ranking above 37% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Zammad, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 9.1 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N- Weakness
- CWE-639
- Assigned by
- cve@mitre.org
Dates
- Published
- 2024-04-26
- Last modified
- 2026-09-16
- Sources
- NVD
Affected products
- Zammad Zammad6.2.0 - 6.3.0, 6.3.0
As listed in the NVD configuration data. Not a statement about your estate.