CodiMD through 2.5.4 has a CSP-based protection mechanism against XSS through uploaded SVG documents containing JavaScript, but it can be…

Description

CodiMD through 2.5.4 has a CSP-based protection mechanism against XSS through uploaded SVG documents containing JavaScript, but it can be bypassed in certain cases of different-origin file storage, such as AWS S3. NOTE: it can be considered a user error if AWS is employed for hosting untrusted JavaScript content, but the selected architecture within AWS does not have components that are able to insert Content-Security-Policy headers.

Scores

EPSS (exploitation in 30 days)

0.25% · top 84% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: poc · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.9.

Weakness

• CWE-424 Improper Protection of Alternate Path (opens in a new tab)All about CWE-424 and its CVEs

Affected products

• HackMD · CodiMD

  • affected ≤ 2.5.4

References (2)

• https://github.com/hackmdio/codimd/issues/1910 (opens in a new tab)exploit
• https://github.com/zast-ai/vulnerability-reports/blob/main/formidable/file_upload/report.md (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2025-46655](https://trackcve.app/badge/CVE-2025-46655.svg)](https://trackcve.app/cve/CVE-2025-46655)

Record last updated 29 Apr 2025, 15:22 UTC.