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CVE-2021-27673

19
FAUCET Score

CVE-2021-27673 describes a Cross-Site Scripting (XSS) vulnerability in Tribal Systems Zenario CMS v8.8.52729, specifically within the "admin_boxes.ajax.php" component. This flaw allows authenticated attackers to inject arbitrary HTML into the "cID" parameter when creating new HTML components, potentially leading to arbitrary code execution. Rated as Medium severity (CVSS 4.8), exploitation requires high privileges and user interaction, with potential for limited impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
8.8.52729CPE matchmatch criteria
cpe:2.3:a:tribalsystems:zenario:8.8.52729:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.8MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.7
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.09%
Probability of exploitation in next 30 days
EPSS Percentile
61.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0109 is in the 95th percentile among its peer group of 4,937 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

composerpatch availablevia ghsa
Product: tribalsystems/zenarioFixed in: 8.8.53370

Vendor Advisories (1)

composerGHSA-8hcm-jj4x-4gmrmedium

reflected XSS in tribalsystems/zenario

Jun 8, 2021

References

packetstormsecurity.com / files/163083/Zenario-CMS-8.8.52729-SQL-Injection.html
ExploitThird Party AdvisoryVDB Entry
deadsh0t.medium.com / blind-error-based-authenticated-sql-injection-on-zenario-8-8-52729-cms-d4705534df38
ExploitThird Party Advisory