CVE-2021-26830

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 4.6%, top 9% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this weekElevated
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 5%CVSS: 9.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
61(Track*)
EG Risk 61/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity91% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
90.6%
KEV
Not listed

Published

April 16, 2021

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jul 18, 2026
Patch available. Sources: github_release.
github_release Patch Available

Zenario 8.8.53370

Patch available: TribalSystems/Zenario 8.8.53370

https://github.com/TribalSystems/Zenario/releases/tag/8.8.53370

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
tribalsystems/zenario7.5.40440 ... 8.8 (53 versions)8.8.53370—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 01:58 UTCEG score recompute
  2. 2026-07-22 22:45 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
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  42. 2026-06-13 08:43 UTCOSV refresh
  43. 2026-06-12 23:10 UTCEPSS rescore
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-49642
    First seen Mar 15, 2021

    Zenario CMS 8.8.53370 - 'id' Blind SQL Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-26830?
CVE-2021-26830 is a critical vulnerability published on April 16, 2021. 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.
When was CVE-2021-26830 disclosed?
CVE-2021-26830 was first published in the National Vulnerability Database on April 16, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-26830 actively exploited?
CVE-2021-26830 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-26830?
CVE-2021-26830 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2021-26830?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-26830, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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