Low severity · published Aug 18, 2026
CVE-2026-1199
API and Frontend login lockout race condition
3.7
CVSS
0.2%
EPSS
No
On KEV
Description
Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZA
Zabbix · Zabbix
6.0.0 through 6.0.46; 7.0.0 through 7.0.27; 7.4.0 through 7.4.11 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1199
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1199
Vendor Advisory
https://support.zabbix.com/browse/ZBX-28076
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