CVE-2026-77838
Received
Received - Intake
Cross-Site Scripting (XSS) in SOY Calendar
Vulnerability report for CVE-2026-77838, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-08-28
Last updated on: 2026-08-28
Assigner: JPCERT/CC
Description
Description
SOY Calendar contains a cross-site scripting vulnerability. An arbitrary script may be executed on the web browser of the user who is logging in to the product.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tsuyoshi_saito | soy_calendar | to 2.5.0 (exc) |
| tsuyoshi_saito | soy_calendar | 2.5.0 |
| tsuyoshi_saito | soy_cms | 3.25.0 |
| tsuyoshi_saito | soy_gallery | 2.1.0 |
| tsuyoshi_saito | soy_inquiry | 2.11.0 |
| tsuyoshi_saito | soy_shop | 2.15.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
