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NVD / CVE Program· CNA Zabbix

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

Noroxi assessment

Priority: Monitor (action score 24/100)

  • 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: 0.56% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: Zabbix Zabbix 4.0.46rc1, 5.0.35rc1, 6.0.18rc1.

Low priority for now. Upgrade to Zabbix Zabbix 4.0.46rc1, 5.0.35rc1, 6.0.18rc1 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

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 6.1 · v3.1—No exploit Fix available
Published
Jul 13, 2023
Updated
Jun 17, 2026
EPSS
0.5% · 46th percentile

Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
6.1
CNA · Zabbix
6.3
0.2 point gap

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

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-2023-29457

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
zabbixfrontend

Affected versions

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

  • zabbix frontend4.0.0 and later · up to 4.0.45 inclusive
  • zabbix frontend5.0.0 and later · up to 5.0.34 inclusive
  • zabbix frontend6.0.0 and later · up to 6.0.17 inclusive

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

    • 4.0.0 and later · up to and including 4.0.45affected · gitfixed in 4.0.46rc1
    • 5.0.0 and later · up to and including 5.0.34affected · gitfixed in 5.0.35rc1
    • 6.0.0 and later · up to and including 6.0.17affected · gitfixed in 6.0.18rc1

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:10zabbixbefore 1:4.0.4+dfsg-1+deb10u21:4.0.4+dfsg-1+deb10u2
Debian:11zabbixbefore 1:5.0.44+dfsg-1+deb11u11:5.0.44+dfsg-1+deb11u1
Debian:12zabbixfrom 0—
Debian:13zabbixbefore 1:6.0.23+dfsg-11:6.0.23+dfsg-1

Same product

zabbix: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-43515X-Forwarded-For header is active by default causes access to Zabbix sites in maintenance mode
    39Monitor
  • CVE-2025-27232Frontend arbitrary file read in oauth.authorize action
    27Monitor
  • CVE-2025-49643Frontend DoS vulnerability due to asymmetric resource consumption
    24Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2023-29455Jul 13, 2023 · Reflected XSS in several fields of graph form
    24Monitor
  • ← EarlierCVE-2023-29456Jul 13, 2023 · Inefficient URL schema validation
    21Monitor
  • Later →CVE-2023-30958Aug 3, 2023 · DOM XSS in Developer mode dashboard via redirect GET parameter
    24Monitor

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 Zabbix4.0.46rc1Vendor (CNA)
Zabbix Zabbix5.0.35rc1Vendor (CNA)
Zabbix Zabbix6.0.18rc1Vendor (CNA)
debian:zabbix1:6.0.23+dfsg-1 · Debian:13Package 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.

No credits in the CNA record.

Variant candidates

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

No nightly-computed relations.

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.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

nvd-primary

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

Show all references (2 more)

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

All records