Vulnerability details
CVE-2026-53758
emlog emlog
Emlog: Stored XSS via Parsedown Markdown Processing - Raw HTML Not Sanitized
CVSS 4.0
8.7High
Official description
Emlog is an open source website building system. In versions 2.6.29 and prior, article content is processed by Parsedown without enabling safe mode, which means raw HTML including <script> tags embedded in Markdown is passed through unescaped. The output is rendered with no additional sanitization, resulting in stored XSS visible to all site visitors. At time of publication, there are no publicly known patches.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| emlog | emlog | <= 2.6.29 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://github.com/emlog/emlog/security/advisories/GHSA-35vc-2gv4-mw77 x_refsource_CONFIRM
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Details
- Published
- 2026-09-04
- Last updated
- 2026-09-09
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.43%
Probability of exploitation in 30 days
38%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')