Security readout for executives and security teams
Plain-English summary
Cotonti Siena 0.9.19 has a stored cross-site scripting issue in the site title setting. Someone with access to change that setting could save malicious script that runs when an administrator views the affected page. This can expose admin browser data or enable unauthorized actions in that session.
Executive priority
Treat as a moderate-priority application security issue. It is unlikely to cause direct server compromise from the cited data, but it can affect administrator sessions and site integrity. Prioritize if Cotonti administration is internet-accessible or managed by many users.
Technical view
CVE-2021-47808 is CWE-79 stored XSS in Cotonti Siena 0.9.19, affecting the admin configuration panel’s maintitle parameter. The CVSS 3.1 score is 5.4 with network access, low attack complexity, low privileges, and required user interaction. Scope is changed, with low confidentiality and integrity impact.
Likely exposure
Exposure appears limited to Cotonti Siena 0.9.19 deployments where an attacker can authenticate or otherwise reach functionality that modifies the site title. Internet-exposed administration surfaces and shared administrative accounts increase practical risk.
Exploitation context
The source bundle includes an ExploitDB reference, indicating public exploit information exists. The CVE is not listed as KEV in the provided data, and no cited source states active exploitation. Successful abuse requires stored content to be viewed by an administrator or privileged user.
Researcher notes
Evidence identifies version 0.9.19 and parameter maintitle. Patch status is not specified in the provided sources. Do not assume other Cotonti versions are affected without vendor or advisory confirmation. Public exploit reference exists, but active exploitation is not evidenced here.
Mitigation direction
- Identify any Cotonti Siena 0.9.19 installations.
- Check vendor guidance and downloads for fixed or newer supported releases.
- Restrict admin panel access to trusted networks and accounts.
- Remove suspicious script-like content from the site title setting.
- Review permissions for users able to change site configuration.
Validation and detection
- Confirm the installed Cotonti Siena version.
- Inspect the maintitle/site title value for HTML or script content.
- Review administrative change logs for unexpected site title edits.
- Verify only trusted users can access configuration settings.
- Confirm vendor guidance has been checked for an update path.
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.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-47808 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
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50016CVE reference · exploit
- Vendor HomepageCVE reference · product
- Software DownloadCVE reference · product
- VulnCheck Advisory: Cotonti Siena 0.9.19 - 'maintitle' Stored Cross-Site ScriptingCVE reference · third-party-advisory
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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.