Security readout for executives and security teams
Plain-English summary
This issue affects the TYPO3 Dynamic Content Element (dce) extension. A logged-in backend user could trigger SQL injection in vulnerable versions, potentially exposing or altering database data. The sources do not provide a CVSS score or evidence of active exploitation.
Executive priority
Prioritize remediation for internet-facing TYPO3 environments and systems with many backend users. Treat this as important but not emergency-grade without evidence of active exploitation.
Technical view
CVE-2021-31777 is an authenticated SQL injection in TYPO3 dce versions 2.2.0 through 2.6.x before 2.6.2 and 2.7.x before 2.7.1. The attack path requires a backend user account. Public references identify fixed versions but provide limited scoring and impact detail.
Likely exposure
Exposure is likely limited to TYPO3 deployments using the dce extension in the listed vulnerable ranges, especially where backend accounts are broadly assigned or weakly governed.
Exploitation context
The source bundle says exploitation requires a backend user account. CISA KEV is false, and the provided sources do not substantiate active exploitation in the wild.
Researcher notes
The record lacks CVSS, CWE, and detailed technical root cause in the provided bundle. Avoid assuming unauthenticated reachability; the documented prerequisite is backend user access.
Mitigation direction
- Upgrade dce 2.6.x deployments to at least 2.6.2.
- Upgrade dce 2.7.x deployments to at least 2.7.1.
- Check TYPO3 vendor guidance before applying compensating controls.
- Restrict TYPO3 backend access to trusted users only.
- Review backend user permissions and remove unnecessary accounts.
Validation and detection
- Inventory TYPO3 sites for the dce extension.
- Confirm installed dce versions against vulnerable ranges.
- Verify updated deployments report fixed dce versions.
- Review backend user audit logs for unusual database-related activity.
- Confirm no unsupported dce branch remains in production.
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.
Database 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-2021-31777 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://excellium-services.com/cert-xlm-advisory/CVE reference
- https://typo3.org/security/advisory/typo3-ext-sa-2021-005CVE reference
- https://cds.thalesgroup.com/en/tcs-cert/CVE-2021-31777CVE 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.