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CVE-2020-11579

32
FAUCET Score

CVE-2020-11579 is a high-severity vulnerability affecting Chadha PHPKB 9.0 Enterprise Edition, specifically within its installer/test-connection.php component. This flaw allows an unauthenticated remote attacker to disclose local files on vulnerable hosts, particularly those running PHP versions older than 7.2.16 or with MySQL's ALLOW LOCAL DATA INFILE option enabled. The vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and no user interaction required, leading to high confidentiality impact. Its FAUCET Risk Score is 95/100, and its EPSS score is higher than 97% of all CVEs, suggesting a significant likelihood of exploitation. While there are no public exploits in Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered community attention with one mention and one media article discussing its potential for exfiltration through MySQL, indicating awareness and potential for future exploitation. It is not listed in CISA's KEV catalog and is currently inactive on the Hot List.

Impacted Technologies

VendorProductVersion(s)CPE
9.0CPE matchmatch criteria
cpe:2.3:a:chadhaajay:phpkb:9.0:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
26.46%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2646 is in the 96th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

3cxvendor investigatingvia llm_extracted
inveniosoftwarevendor investigatingvia llm_extracted

Vendor Advisories (2)

inveniosoftwarellm-inveniosoftware-ac2ec5c98bf792c5HIGH

Chadha PHPKB Information Disclosure (CVE-2020-11579)

Mar 26, 2026
3cxllm-3cx-bc915561e33a9242HIGH

Chadha PHPKB Information Disclosure (CVE-2020-11579)

Mar 26, 2026

References

github.com / ShielderSec/CVE-2020-11579
ExploitThird Party Advisory
shielder.it
Third Party Advisory
phpkb.com
Product
shielder.it / blog/mysql-and-cve-2020-11579-exploitation
ExploitThird Party Advisory