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CVE Record

CVE-2021-24321: Bello < 1.6.0 - Unauthenticated Blind SQL Injection

The Bello - Directory & Listing WordPress theme before 1.6.0 did not sanitise the bt_bb_listing_field_price_range_to, bt_bb_listing_field_now_open, bt_bb_listing_field_my_lng, listing_list_view and bt_bb_listing_field_my_lat parameters before using them in a SQL statement, leading to SQL Injection issues

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Bello is a WordPress directory/listing theme. Versions before 1.6.0 used several public request parameters in database queries without proper sanitization. An unauthenticated attacker could potentially use blind SQL injection to infer or extract database information from affected sites.

Executive priority

Prioritize affected public WordPress sites because unauthenticated SQL injection can threaten customer data and site integrity. Urgency is high where Bello is internet-facing and below 1.6.0; lower where the theme is absent or already updated.

Technical view

CVE-2021-24321 is a CWE-89 issue in Bello before 1.6.0. The vulnerable parameters include price range, open-status, latitude, longitude, and list-view fields. The sources describe unsanitized input reaching SQL statements, enabling unauthenticated blind SQL injection. No CVSS score is provided in the bundle.

Likely exposure

Exposure is limited to WordPress sites using the Bello - Directory & Listing theme before 1.6.0, especially public listing/search pages that accept the named parameters.

Exploitation context

The bundle includes public vulnerability references, but does not show CISA KEV listing or confirmed active exploitation. Treat exploitability as plausible because the issue is unauthenticated and parameter-based, but do not assume known in-the-wild activity from these sources alone.

Researcher notes

Evidence is specific to Bello and the named parameters. The source bundle does not provide CVSS, CPEs, or KEV confirmation. Avoid expanding scope to other BoldThemes products without separate evidence. Public references may include proof material; handle safely.

Mitigation direction

  • Inventory WordPress sites for the Bello theme and exact installed version.
  • Update Bello to version 1.6.0 or later, after confirming vendor guidance.
  • Remove or replace the theme if a supported fixed version is unavailable.
  • Use WAF rules to monitor or block suspicious listing parameter abuse.
  • Review logs for unusual requests targeting the named parameters.

Validation and detection

  • Confirm whether Bello is installed on each WordPress site.
  • Verify the deployed Bello version is 1.6.0 or later.
  • Identify public routes accepting the listed vulnerable parameters.
  • Review web logs for anomalous repeated parameter variations.
  • Check database and WordPress admin activity for compromise indicators.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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cwe · medium confidence lookup

CWE-89: Database access and collection lookup

Injection into data stores can inform collection, data access, and exfiltration detection reviews. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Database behavior lookup

The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-24321 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
BoldThemesBello - Directory & Listing1.6.0Listed
Weakness

CWE details

CWE-89

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.