A Stored Cross-Site Scripting (XSS) vulnerability in Microweber CMS 2.0 allows attackers…
Priority HIGH 66CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
A Stored Cross-Site Scripting (XSS) vulnerability in Microweber CMS 2.0 allows attackers to inject malicious scripts into user profile fields, leading to arbitrary JavaScript execution in admin browsers.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00577 47th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | microweber/microweber (Packagist) | 2.0.0 – 2.0.19 | — | No fix listed | GHSA-782f-gxj5-xvqc |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- microweber/microweber (Packagist) Vendor— Affected 2.0.0 – 2.0.19 Fixed in — No fix listed GHSA-782f-gxj5-xvqc
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microweber:microweber:2.0.0:*:*:*:*:*:*:* | 2.0.0 | Vulnerable | microweber |
- cpe:2.3:a:microweber:microweber:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·microweber
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-51503
- 2026-10-03 Alias added: GHSA-782f-gxj5-xvqc
References
Advisory 3
More Microweber vulnerabilities
- TI-2023-01763 Command Injection in microweber/microweber CVSS 3.1CRITICAL 9.8
- TI-2023-02100 Improper Privilege Management in microweber/microweber CVSS 3.1HIGH 8.8
- TI-2022-14518 Microweber v1.2.15 was discovered to allow attackers to perform an account takeover via a host header injection attack. CVSS 3.1HIGH 8.8
- TI-2023-04891 Use of Hard-coded Credentials in microweber/microweber CVSS 3.1HIGH 7.5
- TI-2025-37870 Microweber CMS 2.0 has Weak Password Requirements. CVSS 3.1HIGH 8.3
- TI-2022-04247 Cross-site Scripting (XSS) - Stored in microweber/microweber CVSS 3.1MEDIUM 6.1
Sources
- CVE-2025-51503 · CVE Program
- CVE-2025-51503 · NVD
- FIRST EPSS
- GHSA-782f-gxj5-xvqc · GitHub Advisory Database · CC BY 4.0
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