Security readout for executives and security teams
Plain-English summary
CVE-2021-36434 is a critical SQL injection flaw reported in jocms 0.8. An unauthenticated remote attacker could run arbitrary SQL through jo_json_check in getmask.php, potentially reading sensitive information and changing database contents. The sources do not identify a vendor patch, supported versions, or CPE record.
Executive priority
Prioritize as critical for any internet-facing jocms 0.8 deployment because the flaw is unauthenticated SQL injection with high data theft and data tampering impact. Urgency drops only if the product is not present, unreachable, or the affected code path has been removed.
Technical view
The CVE describes CWE-89 in jocms/apps/mask/inc/getmask.php, specifically jo_json_check. CVSS 3.1 score 9.1, vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N, indicates remote, low-complexity, unauthenticated exploitation with high confidentiality and integrity impact, and no availability impact recorded.
Likely exposure
Exposure appears limited to deployments of jocms 0.8 using the affected getmask.php code path. The source bundle lacks CPEs and structured vendor/product data, so asset owners should verify by application inventory and code presence rather than relying on scanner product matching alone.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. The GitHub issue is the only referenced disclosure. Treat exploitability as plausible because the CVSS vector is unauthenticated and network-reachable, but do not assume exploitation in the wild from these sources.
Researcher notes
Evidence is narrow: the CVE record, CVE List entry, and one GitHub issue. Affected metadata is incomplete, and no patch status is provided in the bundle. Researchers should focus on confirming product/version, affected function reachability, and remediation provenance without expanding claims beyond the sources.
Mitigation direction
- Check upstream jocms guidance and the referenced issue for any fixed release or patch.
- Remove or restrict internet access to affected jocms 0.8 instances until remediated.
- Review getmask.php input handling and apply parameterized database queries where maintained internally.
- Back up and inspect affected databases before making production changes.
- Prioritize replacement if jocms is unsupported or no vendor fix exists.
Validation and detection
- Inventory web assets for jocms 0.8 deployments or copied jocms source code.
- Confirm whether jocms/apps/mask/inc/getmask.php and jo_json_check are present.
- Check web and database logs for unusual requests to getmask.php.
- Validate remediation through safe code review or authorized non-destructive testing.
- Confirm scanners are not missing exposure due to absent CPE metadata.
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-2021-36434 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
- 9.1 (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: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.
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:N3.95.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/mxgbr/jocms/issues/6CVE reference
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.