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Vulnerabilities

Vulnerability · CVE-2021-47808

Cotonti Siena 0.9.19 contains a stored cross-site scripting vulnerability in the admin configuration panel's site title parameter.

Published Jan 15, 2026 · catalog updated Apr 7, 2026 · Cotonti Siena

Last checked Oct 30, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2021-47808 is not in CISA KEV. FIRST estimates a 27.00% chance of exploitation in the next 30 days. Check whether you run Cotonti Siena.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
27.00%
Remediation
Vendor / distro source
Affected products
vendor cotonti.com Cotonti Siena 0.9.19

Cotonti Siena 0.9.19 contains a stored cross-site scripting vulnerability in the admin configuration panel's site title parameter. Attackers can inject malicious JavaScript code through the 'maintitle' parameter to execute scripts when administrators view the page.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor cotonti.com Cotonti Siena 0.9.190.9.19

How to fix CVE-2021-47808

  • No stored fix

    No vendor fix text is stored. Use the linked advisory before you change production.

  • Version check

    Seen in 0.9.19

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-47808 is not in CISA KEV. FIRST estimates a 27.00% chance of exploitation in the next 30 days. Check whether you run Cotonti Siena.

Which versions are affected?

Compare what you have installed with cotonti.com Cotonti Siena 0.9.19 0.9.19. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 27.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 15, 2026 · EUVD

    Detected

    Cotonti Siena 0.9.19 contains a stored cross-site scripting vulnerability in the admin configuration panel's site title parameter. Attackers can inject malicious JavaScript code through the 'maintitle' parameter to execute scripts when administrators view the page.

  2. Apr 7, 2026 · EUVD

    Updated

    Cotonti Siena 0.9.19 contains a stored cross-site scripting vulnerability in the admin configuration panel's site title parameter. Attackers can inject malicious JavaScript code through the 'maintitle' parameter to execute scripts when administrators view the page.

Sources

  • EUVDVulnerability recordEUVD-2026-3014

    Cotonti Siena 0.9.19 contains a stored cross-site scripting vulnerability in the admin configuration panel's site title parameter. Attackers can inject malicious JavaScript code through the 'maintitle' parameter to execute scripts when administrators view the page.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Apr 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • EUVDOct 30, 2026