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CVE-2023-31285

MEDIUM
6.1
CVSS Score
Published: April 27, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:56 AM UTC
2 products affected across 1 vendorStartsharpSerene

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

An XSS issue was discovered in Serenity Serene (and StartSharp) before 6.7.0. When users upload temporary files, some specific file endings are not allowed, but it is possible to upload .html or .htm files containing an XSS payload. The resulting link can be sent to an administrator user.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Serene· Serenity
95%
v < 6.7.0
Affected range stops below 6.7.0, so it looks safe — our inference, not a vendor statement
Startsharp· Serenity
95%
v < 6.7.0
Affected range stops below 6.7.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Source: [email protected]
http://packetstormsecurity.com/files/172648/Serenity-StartSharp-Software-File-Upload-XSS-User-Enumeration-Reusable-Tokens.html
Mailing List
Source: [email protected]
http://seclists.org/fulldisclosure/2023/May/14
PatchVendor Advisory
Source: [email protected]
https://github.com/serenity-is/Serenity/commit/11b9d267f840513d04b4f4d4876de7823a6e48d2

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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