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Vulnerability Details :

CVE-2026-23927

Summary
Assigner-Zabbix
Assigner Org ID-72de3e22-0555-4a0d-ae81-9249e0f0a1e8
Published At-06 May, 2026 | 06:59
Updated At-06 May, 2026 | 13:00
Rejected At-
Credits

Agent 2 Oracle plugin TNS connection string injection via the 'service' parameter

A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Zabbix
Assigner Org ID:72de3e22-0555-4a0d-ae81-9249e0f0a1e8
Published At:06 May, 2026 | 06:59
Updated At:06 May, 2026 | 13:00
Rejected At:
▼CVE Numbering Authority (CNA)
Agent 2 Oracle plugin TNS connection string injection via the 'service' parameter

A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session.

Affected Products
Vendor
ZABBIXZabbix
Product
Zabbix
Repo
https://git.zabbix.com/
Modules
  • Agent2
Default Status
unknown
Versions
Affected
  • From 6.0.0 through 6.0.44 (git)
    • -> unaffectedfrom6.0.45
  • From 7.0.0 through 7.0.23 (git)
    • -> unaffectedfrom7.0.24
  • From 7.4.0 through 7.4.7 (git)
    • -> unaffectedfrom7.4.8
Problem Types
TypeCWE IDDescription
CWECWE-522CWE-522: Insufficiently Protected Credentials
Type: CWE
CWE ID: CWE-522
Description: CWE-522: Insufficiently Protected Credentials
Metrics
VersionBase scoreBase severityVector
4.05.1MEDIUM
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N
Version: 4.0
Base score: 5.1
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-194CAPEC-194: Fake the Source of Data
CAPEC ID: CAPEC-194
Description: CAPEC-194: Fake the Source of Data
Solutions

Update the affected components to their respective fixed versions.

Configurations

An attacker sending malicious requests to Agent 2 monitoring an Oracle database.

Workarounds

Don't use named sessions for Oracle database monitoring.

Exploits
Credits
reporter
Zabbix wants to thank kelsier from clocktwice.com for submitting this report on the HackerOne bug bounty platform.
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://support.zabbix.com/browse/ZBX-27759
N/A
Hyperlink: https://support.zabbix.com/browse/ZBX-27759
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@zabbix.com
Published At:06 May, 2026 | 08:16
Updated At:06 May, 2026 | 08:16

A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.05.1MEDIUM
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/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
Type: Secondary
Version: 4.0
Base score: 5.1
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/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
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-522Secondarysecurity@zabbix.com
CWE ID: CWE-522
Type: Secondary
Source: security@zabbix.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://support.zabbix.com/browse/ZBX-27759security@zabbix.com
N/A
Hyperlink: https://support.zabbix.com/browse/ZBX-27759
Source: security@zabbix.com
Resource: N/A

Change History

0
Information is not available yet

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Details not found