Stored Cross-Site Scripting (XSS) in Sesame web application
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Stored Cross-Site Scripting (XSS) vulnerability in Sesame web application, due to the fact that uploaded SVG images are not properly sanitized. This allows attackers to embed malicious scripts in SVG files by sending a POST request using the 'logo' parameter in '/api/v3/companies/<ID>/logo', which are then stored on the server and executed in the context of any user who accesses the compromised resource.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| SESAME LABS S.L | Sesame | all versions | — | No fix listed | CNA |
- Sesame VendorSESAME LABS S.L Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-41084
- 2026-10-03 Alias added: GHSA-ffgq-vm8w-4m65
References
Sources
- CVE-2025-41084 · CVE Program
- CVE-2025-41084 · NVD
- FIRST EPSS
- GHSA-ffgq-vm8w-4m65 · GitHub Advisory Database · CC BY 4.0
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