Security readout for executives and security teams
Plain-English summary
CVE-2021-47954 is an unauthenticated SQL injection issue in LayerBB 1.1.4. A public attacker could influence database queries through the search feature and potentially access sensitive database information. The sources do not show CISA KEV listing or confirmed active exploitation.
Executive priority
Treat this as high priority for any internet-facing LayerBB 1.1.4 deployment because exploitation requires no login and could expose database contents. Urgency is lower where LayerBB is absent, upgraded, or not publicly reachable.
Technical view
LayerBB 1.1.4 is affected by CWE-89 SQL injection via the search_query parameter on the search endpoint. The CVSS 4.0 score is 8.8, reflecting network reachability, low complexity, no privileges, and high confidentiality impact. Public exploit material is referenced, but no vendor fix is identified in the bundle.
Likely exposure
Exposure is likely limited to organizations still running LayerBB 1.1.4, especially internet-facing forums with the search feature enabled. The bundle does not identify other affected versions or products.
Exploitation context
ExploitDB and VulnCheck references indicate public exploit information exists. However, KEV is false and the provided sources do not establish active in-the-wild exploitation.
Researcher notes
Evidence supports LayerBB 1.1.4 only. The bundle names the vulnerable parameter and endpoint, but does not provide a vendor advisory, patch version, or active exploitation confirmation. Avoid broad version claims unless confirmed by additional vendor data.
Mitigation direction
- Check LayerBB vendor or maintainer guidance for a fixed release or official workaround.
- Prioritize upgrading, replacing, or retiring LayerBB 1.1.4 where exposed.
- Temporarily restrict access to the search endpoint if operationally feasible.
- Apply database least privilege for the application account.
- Monitor web and database logs for suspicious search activity.
Validation and detection
- Inventory public sites and confirm whether LayerBB 1.1.4 is deployed.
- Verify whether the search endpoint is reachable by unauthenticated users.
- Review application code for parameterized handling of search_query.
- Use authorized, non-destructive scanning in staging or approved production windows.
- Check logs for unusual search requests and database errors.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
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.
Open ATT&CK lookupDatabase 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 lookupCVE-2021-47954 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
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.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N——VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N3.94.2VulnCheckVulnerability scoring details
Base CVSS 4.0 score
8.8HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49593CVE reference, VulnCheck · exploit
- VulnCheck Advisory: LayerBB 1.1.4 SQL Injection via search_query ParameterCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.