Security readout for executives and security teams
Plain-English summary
Joomla sites using Page Builder CK versions 1.0.0 through 3.6.4 may allow an unauthenticated remote attacker to manipulate database queries. Successful exploitation could expose, alter, or disrupt site data without user interaction. The available sources rate this issue critical, but do not document observed exploitation.
Executive priority
Treat this as an urgent remediation item for internet-facing Joomla systems. The technical rating indicates potentially complete compromise of application data, with no authentication or user interaction required. Prioritize asset discovery, upgrade confirmation, and log review, while avoiding claims of breach unless evidence is found.
Technical view
CVE-2026-77994 is a second-order SQL injection in Page Builder CK’s frontend page model, associated with the loadStyles method. The CVSS 4.0 vector indicates network access, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact. Detailed input flow and exploitation prerequisites are not provided.
Likely exposure
Exposure is limited to Joomla deployments running Page Builder CK versions 1.0.0 through 3.6.4. Internet-facing sites are the primary concern because the CVSS vector identifies a network-reachable, unauthenticated condition. The bundle provides no deployment prevalence or configuration-specific limitations.
Exploitation context
The CVE is not listed as KEV in the supplied bundle, and no cited source reports active exploitation or public exploit availability. Second-order injection generally involves data being stored before later reaching a database query, but the supplied evidence does not identify the initial input path or required application state.
Researcher notes
The record identifies CWE-89 and the loadStyles method but lacks code-level details, vulnerable parameter names, configuration dependencies, and indicators of compromise. The version boundary strongly identifies 1.0.0–3.6.4 as affected. Researchers should rely on vendor or CVE updates for precise root-cause and patch analysis.
Mitigation direction
- Inventory Joomla sites and identify installed Page Builder CK versions.
- Prioritize upgrading affected installations to version 3.6.5 or later, consistent with the stated affected range.
- Confirm the supported fixed release and any additional precautions through vendor guidance.
- Restrict unnecessary public access while remediation is pending, where operationally feasible.
- Review database and application logs for suspicious activity around affected sites.
Validation and detection
- Verify every Page Builder CK installation reports version 3.6.5 or later.
- Confirm older extension copies are absent from production and deployment artifacts.
- Review vendor guidance to verify the installed release contains the intended correction.
- Check application and database logs for unusual queries, errors, or unexplained data changes.
- Retest affected Joomla pages after upgrading to confirm normal functionality.
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-2026-77994 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
- Critical
- CVSS
- 9.3 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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
1 official scoreWe 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:H/VA:H/SC:N/SI:N/SA:N——JoomlaVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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
- https://www.joomlack.fr/CVE reference, Joomla · product
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.
Improper Neutralization of Special Elements used in an SQL Command
Improper Neutralization of Special Elements used in an SQL Command represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.