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NVD / CVE Program· CNA Zabbix

CVE-2026-23927: Agent 2 Oracle plugin TNS connection string injection via the 'service' parameter

Noroxi assessment

Priority: Monitor (action score 20/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Zabbix Zabbix 6.0.45, 7.0.24, 7.4.8.

Low priority for now. Upgrade to Zabbix Zabbix 6.0.45, 7.0.24, 7.4.8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.1 · v4.0—No exploit Fix available
Published
May 6, 2026
Updated
Sep 18, 2026
EPSS
0.2% · 12th percentile

Report tools

JSON

Action score

20

Monitor

Low priority for now.

CVSS
20 / 40 · 5.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Zabbix
5.1
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-23927

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
zabbixzabbix

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • zabbix zabbix6.0.0 and later · before 6.0.45
  • zabbix zabbix7.0.0 and later · before 7.0.24
  • zabbix zabbix7.4.0 and later · before 7.4.8

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Zabbix). Independent of NVD's CPE analysis and usually ahead of it.

  • Zabbix Zabbix

    • 6.0.0 and later · up to and including 6.0.44affected · gitfixed in 6.0.45
    • 7.0.0 and later · up to and including 7.0.23affected · gitfixed in 7.0.24
    • 7.4.0 and later · up to and including 7.4.7affected · gitfixed in 7.4.8

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12zabbixfrom 0—
Debian:14zabbixbefore 1:7.0.27+dfsg-11:7.0.27+dfsg-1

Same product

zabbix: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-23131Unsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAMLKEV
    98Now
  • CVE-2022-23134Possible view of the setup pages by unauthenticated users if config file already existsKEV
    80Now
  • CVE-2016-10134SQL injection vulnerability in Zabbix before 2.2.14 and 3.0 before 3.0.4 allows remote attackers to execute arbitrary SQL commands via the t
    64This week

Published before and after this one in the same product

  • ← EarlierCVE-2026-23924Mar 24, 2026 · Agent 2 Docker plugin arbitrary file read via Docker API injection
    24Monitor
  • ← EarlierCVE-2026-23926May 6, 2026 · Stored XSS vulnerability in Host navigator widget maintenance tooltip
    29Monitor
  • Later →CVE-2026-23928May 6, 2026 · Stored XSS vulnerability in the Item history/Plain text widget
    29Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Zabbix Zabbix6.0.45Vendor (CNA)
Zabbix Zabbix7.0.24Vendor (CNA)
Zabbix Zabbix7.4.8Vendor (CNA)
debian:zabbix1:7.0.27+dfsg-1 · Debian:14Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

  • kelsierclocktwice.com for submitting this report on the HackerOne bug bounty platform.reporter

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-27231215 days apartLDAP 'Bind password' field value can be leaked by a Zabbix Super Admin
    17Monitor
  • CVE-2026-23922104 days apartEmail media OAuth secret leak to Super Admin
    8Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
X

Weakness class (CWE)

CWE-522 · Insufficiently Protected Credentials

CVSS 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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records