Is CVE-2021-26830 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2021-26830, but active exploitation has not been confirmed.

Can CVE-2021-26830 be exploited remotely?

Yes. CVE-2021-26830 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-26830?

CVE-2021-26830 has a CVSS score of 9.1 (CRITICAL).

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CRITICALPOC

CVE-2021-26830

CWE-89Published: April 16, 2021· Updated: Jun 17, 2026

9.1

CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2021-26830 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.

A proof-of-concept (PoC) exploit exists for CVE-2021-26830. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.