Security readout for executives and security teams
Plain-English summary
This CVE affects the Joomla Zap Calendar Lite component version 4.3.4. An unauthenticated attacker may be able to query the website database through a vulnerable calendar RSVP parameter. For exposed sites, the main business risk is database disclosure, including information that could support further compromise.
Executive priority
Treat as high priority for any internet-facing Joomla deployment using this component. The issue requires no login and targets the database layer, so inventory and containment should happen promptly before routine maintenance windows.
Technical view
Zap Calendar Lite 4.3.4 is reported vulnerable to SQL injection in the RSVP plugin endpoint through the eid parameter. The supplied CVSS 4.0 score is 8.8, with network access, low complexity, no privileges, and no user interaction. The issue is mapped to CWE-89.
Likely exposure
Exposure is likely limited to Joomla sites running Zcontent Zap Calendar Lite 4.3.4 with the vulnerable RSVP functionality reachable from the internet. The supplied sources do not prove other versions are affected.
Exploitation context
The bundle cites an ExploitDB entry, indicating public exploit information exists. KEV is false, and the supplied sources do not establish active exploitation in the wild.
Researcher notes
Do not assume broad Joomla exposure; the named affected product is Zap Calendar Lite 4.3.4. The supplied record does not name a patched release. Validation should focus on installed version, reachable RSVP functionality, and evidence of database-probing requests.
Mitigation direction
- Identify Joomla sites using Zap Calendar Lite 4.3.4.
- Check Zcontent or Joomla extension guidance for an official fix.
- Disable or remove the component if no fixed version is available.
- Restrict public access to affected RSVP functionality where operationally feasible.
- Review database and web logs for suspicious parameter activity.
Validation and detection
- Confirm whether Zap Calendar Lite is installed and record its version.
- Verify whether RSVP plugin routes are publicly reachable.
- Review extension inventory across production and staging Joomla sites.
- Check logs for unusual requests involving the affected parameter.
- Document whether compensating controls block unauthenticated access.
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-2017-20268 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-42500CVE reference, VulnCheck · exploit
- Official Product HomepageCVE reference, VulnCheck · product
- Product ReferenceCVE reference, VulnCheck · product
- VulnCheck Advisory: Joomla! Component Zap Calendar Lite 4.3.4 SQL InjectionCVE 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.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.