A cross-site scripting (XSS) vulnerability in the component /blog/blogpost/add of…
Priority MEDIUM 55CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- 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 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
A cross-site scripting (XSS) vulnerability in the component /blog/blogpost/add of Mezzanine CMS v6.1.0 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into a blog post.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00689 52nd 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
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 |
| — | Mezzanine (PyPI) | up to 6.1.0 | — | No fix listed | GHSA-269j-37ww-cmh3 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- Mezzanine (PyPI) Vendor— Affected up to 6.1.0 Fixed in — No fix listed GHSA-269j-37ww-cmh3
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-50481
- 2026-10-03 Alias added: GHSA-269j-37ww-cmh3
- 2026-10-19 EPSS moved to the 50th–90th percentile
References
More jupo Mezzanine vulnerabilities
- TI-2025-05462 Stored Cross-Site Scripting (XSS) in Mezzanine CMS Admin Interface CVSS 4.0MEDIUM 4.8
- TI-2024-16615 An issue in Mezzanine v6.0.0 allows attackers to bypass access controls via manipulating the Host header. CVSS 3.1CRITICAL 9.1
- TI-2024-16614 An issue in Mezzanine v6.0.0 allows attackers to bypass access control mechanisms in the… CVSS 3.1CRITICAL 9.8
- TI-2020-13510 Cross Site Scripting (XSS) in Mezzanine v4.3.1 allows remote attackers to execute… CVSS 3.1MEDIUM 6.1
- TI-2025-21139 Cross-Site Scripting (XSS) vulnerability exists in Mezzanine CMS 6.0.0 in the "View… CVSS 3.1MEDIUM 6.1
- TI-2018-11919 Mezzanine CMS v4.3.1 allows XSS via the… CVSS 3.0MEDIUM 4.8
Sources
- CVE-2025-50481 · CVE Program
- CVE-2025-50481 · NVD
- FIRST EPSS
- GHSA-269j-37ww-cmh3 · GitHub Advisory Database · CC BY 4.0
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