Strategic Overview
- Status
- Patched in 1.6.0
- Affected Theme
- Bello - Directory & Listing
- Affected Version
< 1.6.0- CVSS
- 6.1Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24320
At a glance
CVE-2021-24320 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Bello - Directory & Listing WordPress theme, affecting versions < 1.6.0. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.6.0; sites on affected versions should update now. Disclosed March 2021, reported by R3N0.
Vulnerability Overview
The Bello - Directory & Listing WordPress theme before 1.6.0 did not properly sanitise and escape its listing_list_view, bt_bb_listing_field_my_lat, bt_bb_listing_field_my_lng, bt_bb_listing_field_distance_value, bt_bb_listing_field_my_lat_default, bt_bb_listing_field_keyword, bt_bb_listing_field_location_autocomplete, bt_bb_listing_field_price_range_from and bt_bb_listing_field_price_range_to parameters in its listing page, leading to reflected Cross-Site Scripting issues.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Bello - Directory & Listing < 1.6.0 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Bello - Directory & Listing the fix is 1.6.0: builds < 1.6.0 are affected, anything from 1.6.0 onward is not.
Remediation
Update to version 1.6.0, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Bello - Directory & Listing: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Bello - Directory & Listing 1.6.0 closes this, and updating the theme is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Bello - Directory & Listing
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C