Security readout for executives and security teams
Plain-English summary
CVE-2020-21120 is a critical SQL injection issue reported in UQCMS 2.1.3. An unauthenticated remote attacker may be able to abuse the cart count endpoint through a cookie parameter, risking data theft, data modification, and service disruption. The source bundle does not identify a vendor patch.
Executive priority
Treat as urgent for any confirmed UQCMS 2.1.3 deployment, especially internet-facing sites. The vulnerability scores critical and requires no login or user interaction, but patch details are not provided in the source bundle, so remediation should begin with vendor/project guidance and exposure reduction.
Technical view
The CVE describes CWE-89 SQL injection in home\controls\cart.class.php, reachable via the cookie_cart parameter to /index.php/cart/num in UQCMS 2.1.3. CVSS 3.1 is 9.8, network-accessible, low complexity, no privileges, and no user interaction. Affected CPE/vendor metadata is incomplete.
Likely exposure
Exposure is most likely where UQCMS 2.1.3 is deployed and the /index.php/cart/num route is reachable by untrusted users. The CVE record’s affected vendor/product fields are n/a, so asset confirmation may require application inventory, code review, or deployment owner confirmation.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. It cites a public GitHub issue and describes a remotely reachable SQL injection, which raises practical risk, but observed exploitation should not be assumed from the provided sources alone.
Researcher notes
Evidence quality is moderate: the CVE gives a precise file, route, parameter, CWE, and CVSS vector, but affected CPE metadata and fix information are missing. Avoid broad product assumptions beyond UQCMS 2.1.3 unless confirmed by additional vendor or code evidence.
Mitigation direction
- Check UQCMS project or vendor guidance for a fixed release or official workaround.
- Restrict public access to affected UQCMS deployments until remediation is confirmed.
- Replace unsafe SQL construction with prepared statements or parameterized queries.
- Apply allow-list validation for cookie-derived values before database use.
- Review OWASP SQL injection prevention guidance for secure implementation patterns.
Validation and detection
- Inventory internet-facing systems for UQCMS 2.1.3 deployments.
- Confirm whether /index.php/cart/num is exposed to unauthenticated users.
- Review home\controls\cart.class.php for cookie_cart database handling.
- Use authorized application security testing to verify SQL injection exposure.
- Check web and database logs for unusual requests to the cart count endpoint.
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-2020-21120 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
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
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.