CVE-2021-26830

CRITICAL ⚠ Exploit

SQL Injection in Tribalsystems Zenario CMS 8.8.52729 allows remote attackers to access the database or delete the plugin. This is accomplished via the `ID` input field of ajax.php in the `Pugin lib...

Affects 1 product across 1 vendor.

CVSS 3.19.1
EPSS4.6%
Percentile91th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, no availability impact.
CWE Weakness Definitions
CWE-89: SQL Injection

Attacker inserts SQL commands into application queries through user-controlled input, allowing unauthorized database access.

Related Attack Patterns (CAPEC)
CAPEC-7 Blind SQL Injection
via CWE-89
CAPEC-108 Command Line Execution through SQL Injection
via CWE-89
CAPEC-109 Object Relational Mapping Injection
via CWE-89
CAPEC-110 SQL Injection through SOAP Parameter Tampering
via CWE-89
CAPEC-470 Expanding Control over the Operating System from the Database
via CWE-89
Show all 6
via CWE-89

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

A critical SQL Injection vulnerability exists in Tribalsystems Zenario CMS 8.8.52729, allowing remote attackers to access the database or delete the plugin through the `ID` input field of ajax.php in the `Plugin library - delete` module.

BSID: BS-2021-GLOBAL-305261-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

Is this CVE in your environment?

BreachSpider monitors your ICS/OT environment for vulnerabilities like this one. No agents or network access required. Free to start.

Check My Environment →
Frequently Asked Questions
What is CVE-2021-26830?
A critical SQL Injection vulnerability exists in Tribalsystems Zenario CMS 8.8.52729, allowing remote attackers to access the database or delete the plugin through the `ID` input field of ajax.php in the `Plugin library - delete` module.
What is the CVSS score for CVE-2021-26830?
CVE-2021-26830 has CVSS 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. EPSS: 4.6%.
Is CVE-2021-26830 actively exploited?
Public exploit available for CVE-2021-26830. Exploitation risk elevated.
How do I remediate CVE-2021-26830?
Priority: IMMEDIATE.
What systems are affected by CVE-2021-26830?
CVE-2021-26830 affects Tribalsystems Zenario.
Vulnerability Details
CVE IDCVE-2021-26830
BSIDBS-2021-GLOBAL-305261-C BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published2021-04-16
Last Modified2026-06-17
ICS Relevance0%
Weakness (CWE)
SQL Injection
SourceNVD
Official Description

SQL Injection in Tribalsystems Zenario CMS 8.8.52729 allows remote attackers to access the database or delete the plugin. This is accomplished via the `ID` input field of ajax.php in the `Pugin library - delete` module.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

The vulnerability is exploited by manipulating the `ID` parameter in the `ajax.php` script, which is part of the `Plugin library - delete` module. This allows attackers to inject malicious SQL code, leading to unauthorized database access or deletion of the plugin.

Exploitation Likelihood: HIGH

Affected Products
VendorProductAffected Versions
Tribalsystems Zenario 8.8.52729
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 2008 Days
CISA known-exploitedNot in KEV catalog
Public Exploit⚠ Available — Reference
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
Related CVEs affecting Tribalsystems
CVE-2022-44136 9.8 Zenario CMS 9.3.57186 is vulnerable to Remote Code Excution (RCE). CVE-2018-5960 8.8 Zenario v7.1 - v7.6 has SQL injection via the `Name` input field of organizer... CVE-2018-18420 8.8 Cross-Site Request Forgery (CSRF) vulnerability was discovered in the 8.3 ver... CVE-2022-23043 7.2 Zenario CMS 9.2 allows an authenticated admin user to bypass the file upload ... CVE-2021-42171 7.2 Zenario CMS 9.0.54156 is vulnerable to File Upload. The web server can be com...
View all Tribalsystems CVEs →

Critical Severity - Know Your Exposure

A CVSS 9.1 vulnerability in your ICS environment cannot wait. BreachSpider maps critical CVEs to your specific assets and tells you what to fix first.

Create a free account →