CVE-2026-16270

6.9 mediumEPSS 0.5%

Medium (6.9). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
CWE: CWE-1333
Published: 2026-07-22
Modified: 2026-07-22
Record from: the NVD, synced 2026-10-19

References

https://cert.pl/posts/2026/07/CVE-2026-16270
https://github.com/open-mercato/open-mercato/pull/1996
https://www.openmercato.com/

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