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CVE-2021-34187

50
FAUCET Score

CVE-2021-34187 is a critical SQL Injection vulnerability affecting Chamilo through version 1.11.14, specifically within the main/inc/ajax/model.ajax.php component. This flaw allows unauthenticated attackers to execute arbitrary SQL commands via the searchField, filters, or filters2 parameters. With a CVSS score of 9.8 (CRITICAL) and a FAUCET Risk Score of 100/100, successful exploitation can lead to complete compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, Nuclei templates exist for detection, and the vulnerability has garnered significant community discussion, indicating potential for active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.11.14CPE matchmatch criteria
cpe:2.3:a:chamilo:chamilo:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
16.18%
Probability of exploitation in next 30 days
EPSS Percentile
96.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-34187 · May 27, 2025
This CVE's current EPSS score of 0.1618 is in the 93rd percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / chamilo/chamilo-lms/commit/005dc8e9eccc6ea35264064ae09e2e84af8d5b59
PatchThird Party Advisory
github.com / chamilo/chamilo-lms/commit/f7f93579ed64765c2667910b9c24d031b0a00571
PatchThird Party Advisory
murat.one
ExploitThird Party Advisory
support.chamilo.org / projects/1/wiki/Security_issues
PatchVendor Advisory