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CERTFR-2026-AVI-1039
Vulnerability from certfr_avis - Published: 2026-08-18 - Updated: 2026-08-18
De multiples vulnérabilités ont été découvertes dans Zabbix. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Zabbix versions 7.4.x ant\u00e9rieures \u00e0 7.4.13",
"product": {
"name": "Zabbix",
"vendor": {
"name": "Zabbix",
"scada": false
}
}
},
{
"description": "Zabbix versions 7.x ant\u00e9rieures \u00e0 7.0.29",
"product": {
"name": "Zabbix",
"vendor": {
"name": "Zabbix",
"scada": false
}
}
},
{
"description": "Zabbix versions 6.x ant\u00e9rieures \u00e0 6.0.48",
"product": {
"name": "Zabbix",
"vendor": {
"name": "Zabbix",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-59781",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-59781"
},
{
"name": "CVE-2026-23934",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23934"
},
{
"name": "CVE-2026-1199",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-1199"
},
{
"name": "CVE-2026-23922",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23922"
},
{
"name": "CVE-2026-23930",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23930"
},
{
"name": "CVE-2026-23931",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23931"
},
{
"name": "CVE-2026-23935",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23935"
},
{
"name": "CVE-2026-23937",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23937"
},
{
"name": "CVE-2026-23938",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23938"
},
{
"name": "CVE-2026-23933",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23933"
},
{
"name": "CVE-2026-23929",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23929"
}
],
"initial_release_date": "2026-08-18T00:00:00",
"last_revision_date": "2026-08-18T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-1039",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-08-18T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Injection de code indirecte \u00e0 distance (XSS)"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Zabbix. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance, une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Zabbix",
"vendor_advisories": [
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28077",
"url": "https://support.zabbix.com/browse/ZBX-28077"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28070",
"url": "https://support.zabbix.com/browse/ZBX-28070"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28068",
"url": "https://support.zabbix.com/browse/ZBX-28068"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28069",
"url": "https://support.zabbix.com/browse/ZBX-28069"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28067",
"url": "https://support.zabbix.com/browse/ZBX-28067"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28074",
"url": "https://support.zabbix.com/browse/ZBX-28074"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28071",
"url": "https://support.zabbix.com/browse/ZBX-28071"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28073",
"url": "https://support.zabbix.com/browse/ZBX-28073"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28072",
"url": "https://support.zabbix.com/browse/ZBX-28072"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28075",
"url": "https://support.zabbix.com/browse/ZBX-28075"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28076",
"url": "https://support.zabbix.com/browse/ZBX-28076"
}
]
}
CVE-2026-1199 (GCVE-0-2026-1199)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:15 – Updated: 2026-08-18 13:35
VLAI
EPSS
VEX
Title
API and Frontend login lockout race condition
Summary
Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:54 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
Impacted products
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CVE-2026-23922 (GCVE-0-2026-23922)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:13 – Updated: 2026-08-18 16:02
VLAI
EPSS
VEX
Title
Email media OAuth secret leak to Super Admin
Summary
The email media OAuth field 'Client secret' cannot be read after saving, but a Super Admin can leak it by setting a malicious 'Token endpoint'. Changes were made to reset the client secret upon changing the token endpoint.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 16:02 UTC
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
1 reference
Credits
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CVE-2026-23929 (GCVE-0-2026-23929)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:16 – Updated: 2026-08-18 13:35
VLAI
EPSS
VEX
Title
Prototype pollution leading to stored XSS
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:51 UTC
CWE
- CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ("Prototype Pollution")
Assigner
References
1 reference
Impacted products
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CVE-2026-23930 (GCVE-0-2026-23930)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:17 – Updated: 2026-08-18 13:35
VLAI
EPSS
VEX
Title
Frontend DoS via the popup.testtriggerexpr action
Summary
An unauthenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend popup.testtriggerexpr action, leading to potential denial of service.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:51 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
1 reference
Impacted products
Credits
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CVE-2026-23931 (GCVE-0-2026-23931)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:17 – Updated: 2026-08-18 13:35
VLAI
EPSS
VEX
Title
Frontend plaintext macro value enumeration via the validatate.api.exists action
Summary
The frontend validatate.api.exists action can be exploited by authenticated users to extract plaintext user macro values leading to potential loss of confidentiality.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:51 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
1 reference
Credits
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CVE-2026-23933 (GCVE-0-2026-23933)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:18 – Updated: 2026-08-18 13:35
VLAI
EPSS
VEX
Title
Hardcoded session key in Zabbix 7.4
Summary
In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid session cookies, potentially leading to unauthorized access. For other Zabbix deployments this does not have a known impact.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:51 UTC
CWE
- CWE-259 - CWE-259: Use of Hard-coded Password
Assigner
References
1 reference
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CVE-2026-23934 (GCVE-0-2026-23934)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:18 – Updated: 2026-08-18 13:35
VLAI
EPSS
VEX
Title
Frontend DoS via the validate.api.exists action
Summary
An authenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend validate.api.exists action, leading to potential denial of service.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:51 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
1 reference
Credits
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CVE-2026-23935 (GCVE-0-2026-23935)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:19 – Updated: 2026-08-18 13:34
VLAI
EPSS
VEX
Title
Use-after-free read in script item/preprocessing HttpRequest body
Summary
A Zabbix administrator is able to read out of bounds memory by utilizing a flaw in script item/preprocessing (JavaScript) HttpRequest logic, leading to potential confidentiality loss.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:50 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
1 reference
Impacted products
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CVE-2026-23937 (GCVE-0-2026-23937)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:20 – Updated: 2026-08-18 13:34
VLAI
EPSS
VEX
Title
Host PSK extraction in Zabbix API
Summary
The Zabbix API host.get action can be exploited by authenticated users to extract a host's PSK key leading to potential loss of data integrity.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:50 UTC
CWE
- CWE-203 - Observable Discrepancy
Assigner
References
1 reference
Impacted products
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CVE-2026-23938 (GCVE-0-2026-23938)
Vulnerability from cvelistv5 – Published: 2026-08-18 12:20 – Updated: 2026-08-18 13:34
VLAI
EPSS
VEX
Title
Server DoS via JavaScript preprocessing or script items
Summary
An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:50 UTC
CWE
- CWE-248 - Uncaught Exception
Assigner
References
1 reference
Impacted products
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{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUpdate the affected components to their respective fixed versions.\u003c/p\u003e"
}
],
"value": "Update the affected components to their respective fixed versions."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Server DoS via JavaScript preprocessing or script items",
"x_generator": {
"engine": "Vulnogram 1.0.4"
}
}
},
"cveMetadata": {
"assignerOrgId": "72de3e22-0555-4a0d-ae81-9249e0f0a1e8",
"assignerShortName": "Zabbix",
"cveId": "CVE-2026-23938",
"datePublished": "2026-08-18T12:20:52.173Z",
"dateReserved": "2026-01-19T14:03:13.686Z",
"dateUpdated": "2026-08-18T13:34:38.081Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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