Security readout for executives and security teams
Plain-English summary
This is an old TYPO3 cross-site scripting issue in the recycler system extension. If an organization still runs affected TYPO3 4.3, 4.4, or 4.5 versions, a remote attacker could inject script or HTML that executes in a user's browser.
Executive priority
Prioritize this where legacy TYPO3 remains business-critical or internet-accessible. It is not shown as actively exploited in the provided sources, but unresolved XSS in a CMS can expose administrator sessions and site integrity.
Technical view
CVE-2011-4631 affects TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4. The reported vector is the system extension recycler, allowing arbitrary web script or HTML injection. The provided data has no CVSS, CWE, or authentication details.
Likely exposure
Exposure is most likely in legacy TYPO3 deployments that still run the named vulnerable branches and include the recycler system extension. The bundle does not identify affected modern TYPO3 releases or non-TYPO3 products.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. The practical risk is session theft, content manipulation, or browser-side actions against users who interact with affected TYPO3 functionality.
Researcher notes
Evidence is limited to the CVE description and TYPO3/Debian references. No CVSS, CWE, exploit maturity, authentication requirement, or detailed affected configuration is provided in the bundle. Avoid assuming exploitability beyond the recycler XSS statement.
Mitigation direction
- Upgrade TYPO3 to the fixed branch versions named by the advisory or later supported releases.
- Check TYPO3 vendor guidance for the correct upgrade path for unsupported legacy branches.
- Disable or restrict the recycler extension if vendor guidance allows and upgrade is delayed.
- Limit access to TYPO3 administrative interfaces to trusted users and networks.
- Review web application security controls that reduce XSS impact, such as output handling and browser protections.
Validation and detection
- Inventory TYPO3 instances and confirm exact core versions.
- Confirm whether the recycler system extension is installed or enabled.
- Compare installed versions with 4.3.12, 4.4.9, and 4.5.4 fix thresholds.
- Review application logs and content records for suspicious script or HTML injection.
- Verify remediation by confirming the upgraded TYPO3 version and extension state.
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.
CVE-2011-4631 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://security-tracker.debian.org/tracker/CVE-2011-4631CVE reference · x_refsource_MISC
- https://typo3.org/security/advisory/typo3-core-sa-2011-001/#XSSCVE reference · x_refsource_CONFIRM
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.