Osiris Signature Banner: Cross-site request forgery
Osiris Signature Banner is affected by cross-site request forgery. The vulnerable path is reachable without authentication. Exploitation relies on a signed-in privileged user submitting an attacker-controlled request. The published affected range is <= 0.5.
- Component
- Osiris Signature Banner
- Plugin slug
osiris-signature-banner- Affected
- <= 0.5
- Safe version
> 0.5- Published
- Jun 24, 2026
This CVE was published Jun 24, 2026 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update Osiris Signature Banner to a release after 0.5, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Osiris Signature Banner plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.5. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N