CVE-2026-16270
ReDoS in Open Mercato
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jul 22, 2026
- Updated
- Jul 22, 2026
- Reserved
- Jul 20, 2026
Description
Open Mercato does not validate regex rules. An attacker with privileges to create the regex rule can add an unsafe regex to a field. When someone provide the proper string it can result in a DoS attack.
This issue was fixed in version 0.6.4.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | CERT-PL |
Weaknesses
- CWE-1333 Inefficient regular expression complexity
Affected Products
| Product | Versions |
|---|---|
Open MercatoOpen Mercato |
|
References
- https://cert.pl/posts/2026/07/CVE-2026-16270third-party-advisory
- https://www.openmercato.com/product
- https://github.com/open-mercato/open-mercato/pull/1996patch
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