Security readout for executives and security teams
Plain-English summary
This CVE concerns cross-site scripting in the TYPO3 dated_news, also called Dated News, extension through version 5.1.1. Affected sites could let attacker-controlled content run in another user's browser. The bundle does not provide severity, CVSS, trigger details, or a confirmed fixed version.
Executive priority
Handle as a targeted web application risk if the organization runs TYPO3 with this extension. Urgency depends on whether dated_news is installed, public-facing, and unpatched. Missing severity data means remediation should be inventory-driven rather than assumed critical.
Technical view
CVE-2021-36790 is an XSS issue in the TYPO3 dated_news extension through 5.1.1. The supplied sources do not identify the vulnerable parameter, required privileges, affected TYPO3 core versions, or remediation release. Treat exposure as extension-specific and validate installed extension versions against TYPO3 advisory TYPO3-EXT-SA-2021-013.
Likely exposure
Exposure is likely limited to TYPO3 deployments that have the dated_news or Dated News extension installed at version 5.1.1 or earlier. The provided bundle lists affected vendor and product fields as n/a, so confirm against actual extension inventory rather than product assumptions.
Exploitation context
The source bundle does not report active exploitation, and KEV status is false. No public exploit status, attack preconditions, or vulnerable input path is included in the provided material.
Researcher notes
The available bundle is sparse: no CVSS, CWE, exploitability detail, or fixed version is provided. The strongest grounded statement is extension-specific XSS affecting dated_news through 5.1.1. Use TYPO3 advisory TYPO3-EXT-SA-2021-013 as the authoritative remediation reference.
Mitigation direction
- Inventory TYPO3 deployments for the dated_news or Dated News extension.
- Check TYPO3 advisory TYPO3-EXT-SA-2021-013 for the supported remediation path.
- Upgrade, remove, or disable vulnerable extension versions per vendor guidance.
- Prioritize public-facing sites and administrator-accessible TYPO3 environments first.
Validation and detection
- Compare installed dated_news versions against the affected range through 5.1.1.
- Confirm whether the TYPO3 extension is present on production, staging, and legacy sites.
- Review TYPO3 advisory details before approving remediation completion.
- Check relevant pages for unexpected script injection reports without using exploit payloads.
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-2021-36790 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://typo3.org/help/security-advisories/securityCVE reference · x_refsource_MISC
- https://typo3.org/security/advisory/typo3-ext-sa-2021-013CVE reference · x_refsource_MISC
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.