A stored cross site scripting (XSS) vulnerability in index.php/legend/6.html of UK CMS…
Priority LOW 25CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
A stored cross site scripting (XSS) vulnerability in index.php/legend/6.html of UK CMS v1.1.10 allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the Comments section.
Why it matters now
EPSS 0.00503 43rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— 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-2020-20977
- 2026-10-03 Alias added: GHSA-8vw4-xv4w-x2mf
References
More Ukcms vulnerabilities
- TI-2019-08111 A CSRF Issue that can add an admin user was discovered in UKcms v1.1.10 via admin.php/admin/role/add.html. CVSS 3.0HIGH 8.8
- TI-2018-10725 A file upload vulnerability exists in ukcms v1.1.7 and earlier. CVSS 3.0HIGH 7.2
- TI-2020-13394 Cross Site Scripting (XSS) vulnerability exists in UKCMS v1.1.10 via data in the index function in Single.php CVSS 3.1MEDIUM 5.4
Sources
- CVE-2020-20977 · CVE Program
- CVE-2020-20977 · NVD
- FIRST EPSS
- GHSA-8vw4-xv4w-x2mf · GitHub Advisory Database · CC BY 4.0
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