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CVE Record

CVE-2023-29457: Insufficient validation of Action form input fields

Reflected XSS attacks, occur when a malicious script is reflected off a web application to the victim's browser. The script can be activated through Action form fields, which can be sent as request to a website with a vulnerability that enables execution of malicious scripts.

MediumCVSS 6.3Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-29457 is a reflected cross-site scripting issue in Zabbix Action form fields. A malicious script can be reflected back to a user’s browser through vulnerable form input handling. The listed severity is medium, but exposure matters because Zabbix often has privileged operational visibility.

Executive priority

Treat as a moderate-priority operational security issue. Patch during the next controlled maintenance window, sooner for internet-exposed or broadly accessible Zabbix consoles.

Technical view

The CVE describes insufficient validation of Action form input fields in Zabbix, mapped to CWE-20. The CVSS 3.1 score is 6.3 with network access, low attack complexity, low privileges, and low confidentiality, integrity, and availability impact. Affected versions listed are Zabbix 4.0.0, 5.0.0, and 6.0.0.

Likely exposure

Organizations running Zabbix 4.0.0, 5.0.0, or 6.0.0 should assess exposure, especially if the Zabbix web interface is reachable by many users or externally accessible.

Exploitation context

The source bundle does not show CISA KEV listing or cited evidence of active exploitation. CVSS indicates exploitation requires low privileges and no user interaction, but the bundle does not provide exploit mechanics or confirmed real-world abuse.

Researcher notes

Evidence is limited to the CVE description, CVSS metadata, affected version list, Zabbix issue reference, and Debian LTS advisories. The bundle does not include fixed version details, proof-of-concept status, or active exploitation confirmation.

Mitigation direction

  • Check Zabbix advisory ZBX-22988 for vendor-approved remediation guidance.
  • Apply relevant Debian LTS security updates if using Debian-packaged Zabbix.
  • Upgrade affected Zabbix deployments according to vendor or distribution guidance.
  • Limit Zabbix web interface exposure to trusted users and networks where feasible.

Validation and detection

  • Inventory Zabbix deployments and confirm whether versions match the affected list.
  • Review package source and distribution channel for Debian-managed installations.
  • Confirm remediation status against Zabbix advisory ZBX-22988 and Debian notices.
  • Review web access logs for unusual Action form activity without attempting exploit reproduction.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-20: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2023-29457 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
6.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L2.83.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.3Medium
CVSS 3.1 vector shape for CVE-2023-29457Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
ZabbixZabbix4.0.0, 5.0.0, 6.0.0affected
Weakness

CWE details

CWE-20

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-20 · source CWE mapping

Improper Input Validation

Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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