underConstruction <= 1.18 - Reflected Cross-Site Scripting
CVE-2021-39320

6.1MEDIUM

Key Information:

Vendor

Noah Kagan

Status
Underconstruction
Vendor
CVE Published:
1 September 2021

What is CVE-2021-39320?

The underConstruction plugin <= 1.18 for WordPress echoes out the raw value of $GLOBALS['PHP_SELF'] in the ucOptions.php file. On certain configurations including Apache+modPHP, this makes it possible to use it to perform a reflected Cross-Site Scripting attack by injecting malicious code in the request path.

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Deploy the Patch

Affected Version(s)

underConstruction 1.18

References

https://wpscan.com/vulnerability/49ae1df0-d6d2-4cbb-9a9d-...
x_refsource_MISC
https://www.wordfence.com/vulnerability-advisories/#CVE-2...
x_refsource_MISC

EPSS Score

19% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ramuel Gall, Wordfence
JSON
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