Security readout for executives and security teams
Plain-English summary
This issue affects the Antisnews WordPress theme before version 1.10. A remote attacker could inject script or HTML through the site search parameter, potentially causing visitors or administrators to run attacker-controlled browser code. The public source bundle does not provide severity scoring or evidence of active exploitation.
Executive priority
Treat as a targeted web exposure cleanup item, not an emergency based on current evidence. Prioritize internet-facing WordPress sites using the vulnerable theme, especially sites with administrator traffic or sensitive user sessions.
Technical view
CVE-2011-3857 is a reflected or input-driven XSS issue in the Antisnews theme for WordPress before 1.10. The vulnerable input is the s parameter. The sources do not provide CVSS, CWE mapping, detailed sink context, or exploit telemetry.
Likely exposure
Exposure is likely limited to WordPress sites running the Antisnews theme below version 1.10. The bundle does not identify broader affected products or CPEs, so inventory confirmation is necessary before prioritizing remediation.
Exploitation context
The CVE states remote attackers can inject arbitrary web script or HTML via the s parameter. The bundle does not show KEV listing, active exploitation, public exploit maturity, or confirmed real-world campaigns.
Researcher notes
The source record is sparse: no CVSS, CWE, affected CPE, sink details, or exploitation evidence are provided. Analysis should stay anchored to Antisnews before 1.10 and the s parameter until vendor or archival advisory data adds detail.
Mitigation direction
- Inventory WordPress sites for the Antisnews theme and installed version.
- Upgrade Antisnews to version 1.10 or later where still used.
- Replace unsupported theme deployments with a maintained WordPress theme.
- Review vendor advisory details before relying on compensating controls.
- Apply output escaping and input handling fixes if maintaining custom theme code.
Validation and detection
- Confirm whether Antisnews is active or installed on each WordPress site.
- Verify the installed theme version is 1.10 or later.
- Review search parameter handling for unescaped reflected output.
- Check web logs for suspicious requests using the s parameter.
- Confirm remediation in a staging environment before production rollout.
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-2011-3857 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://sitewat.ch/en/Advisories/15CVE 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.