Security readout for executives and security teams
This is an old phpBB 2.0.x cross-site scripting issue in private messages. An authenticated user could place script or HTML in a message body sent to a non-existent user. Business risk is mainly to legacy forums: account/session compromise, user impersonation, or malicious content shown inside the forum. Exposure is likely limited to internet-facing or internal phpBB 2.0.x forums with authenticated user access and private messaging enabled. Organizations not running phpBB 2.0.x are not indicated as affected by the supplied sources. Treat as a legacy-platform cleanup item unless phpBB 2.0.x is still exposed. If present, prioritize remediation because forum users may trust content and sessions inside the application. Mitigation focus: Inventory any remaining phpBB 2.0.x deployments.; Check phpBB vendor guidance for the corrected release or official workaround.; Prioritize replacement of unsupported phpBB 2.x instances..
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
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CVE-2006-6421 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
- phpbb-privmsgphp-xss(30776)CVE reference · vdb-entry, x_refsource_XF
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.