Security readout for executives and security teams
Plain-English summary
CVE-2021-29313 is a reported cross-site scripting issue in SeaCMS 12.6. If reachable and triggerable, it could let attacker-controlled script run in a user's browser in the SeaCMS context. The public record is sparse and does not provide a severity score, confirmed patch, or exploitation evidence.
Executive priority
Treat this as a targeted hygiene issue unless SeaCMS 12.6 is internet-facing or used by privileged administrators. The business risk is browser-side compromise in the CMS context, but urgency is constrained by incomplete severity and exploitation evidence.
Technical view
The CVE describes XSS in SeaCMS 12.6 through the v_company and v_tvs parameters in /admin_video.php. The sources do not clarify authentication requirements, stored versus reflected behavior, browser impact, or remediation status. KEV is false, so provided evidence does not support active exploitation.
Likely exposure
Exposure is limited to organizations running SeaCMS 12.6, especially where the administrative video endpoint is reachable. The bundle lists no CPEs and does not identify broader affected versions or downstream packages.
Exploitation context
There is no cited evidence of active exploitation, and the CVE is not listed as KEV. A public GitHub issue is referenced, but the provided bundle does not establish exploit maturity or real-world targeting.
Researcher notes
Key unknowns are authentication, XSS type, affected version range, patch availability, and exploit reliability. Validation should focus on confirming installed version, endpoint exposure, and whether the vulnerable parameters are safely encoded in deployed code.
Mitigation direction
- Check SeaCMS vendor or project guidance for any fixed release or official workaround.
- Restrict access to SeaCMS administrative paths to trusted networks and authorized users.
- If self-maintaining, review output encoding and input handling for v_company and v_tvs.
- Monitor web logs for unusual requests to /admin_video.php.
- Prioritize migration if SeaCMS 12.6 is unsupported or internet-exposed.
Validation and detection
- Inventory public and internal systems for SeaCMS 12.6 usage.
- Confirm whether /admin_video.php is reachable from untrusted networks.
- Review the referenced GitHub issue and local code handling of v_company and v_tvs.
- Check whether compensating controls protect administrative SeaCMS routes.
- Document whether a vendor patch or local remediation has been applied.
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-2021-29313 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://github.com/ciweiin/seacms/issues/14CVE 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.