EUVD-2026-60734
GHSA-x27p-fpr7-4wpm
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible URL vector, low-privilege auth required, victim interaction needed; scope changes to victim browser enabling full session compromise, no server availability impact from XSS.
Primary rating from Vendor (Zabbix).
CVSS VectorVendor: Zabbix
Lifecycle Timeline
2DescriptionCVE.org
Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps. URL parameter processing was not filtering dangerous properties like __proto__, combined with jQuery's unsafe element creation that traversed the prototype chain.
AnalysisAI
Persistent XSS in Zabbix Maps is triggered by prototype pollution in the searchParamsToObject() function, which processes URL query parameters without filtering reserved JavaScript properties such as __proto__. An authenticated low-privilege attacker can craft a malicious URL that pollutes Object.prototype; when a victim user views the Maps page, jQuery's unsafe DOM element creation traverses the poisoned prototype chain and executes the attacker-controlled payload in the victim's browser session. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold a valid low-privilege authenticated Zabbix account (confirmed by PR:L in the CVSS 4.0 vector) - unauthenticated remote exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.5 (AV:N/AC:L/AT:N/PR:L/UI:A) reflects substantial but conditionally constrained risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Monitor the Zabbix vendor bug tracker at https://support.zabbix.com/browse/ZBX-28068 for a released patch; no specific patched version has been confirmed at time of analysis, so the patch status is: no vendor-released patch identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Zabbix deployments with Maps enabled and document user privilege levels with access to this feature. …
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