CVE-2021-26830

Exp

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.

Published: 2021-04-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-26830 is rated High Exploit Risk (86.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 4.57%, 90th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +3.64% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-26830

EDB-ID Source Kind Published Link
49642 exploit_db edb 2021-03-15 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-26830

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.93% 4.57% +3.64%
2 2026-05-04 1.26% 0.93% -0.33%
3 2026-03-07 — 1.26% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-26830

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 [email protected]
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2021-26830

GitHub Security Advisory for CVE-2021-26830

GHSA-w4f3-7f7c-x652 · Severity: critical · Ecosystem: composer — SQL Injection in tribalsystems/zenario

Affected software / configurations for CVE-2021-26830

Vendor Product Version Raw CPE
tribalsystems zenario 8.8.52729 cpe:2.3:a:tribalsystems:zenario:8.8.52729:*:*:*:*:*:*:*

References for CVE-2021-26830

URL Tags
https://github.com/TribalSystems/Zenario/releases/tag/8.8.53370 Release Notes Third Party Advisory
cvelogic Threat Intelligence