Stored XSS in Enable Media Replace WordPress plugin via SVG upload
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
The Enable Media Replace WordPress plugin before 4.2.3 does not pass replaced media files through the WordPress upload pipeline, so the upload checks that sanitize SVG files never run (CWE-79). An authenticated user with upload access can store an SVG file containing script that runs when the file is opened directly, if an SVG-enabling plugin is active. The sources link a public exploit.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
Description from the CNA
The Enable Media Replace WordPress plugin before 4.2.3 does not pass a replaced media file through the WordPress upload pipeline, so the upload prefilter that SVG-sanitizer Enable Media Replace WordPress plugin before 4.2.3 rely on never runs, allowing an authenticated user with upload access to store an SVG file containing script that executes when the file is opened directly. It requires an SVG-enabling Enable Media Replace WordPress plugin before 4.2.3 to be active, as the replace path otherwise rejects SVG uploads.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 |
|---|---|---|---|---|---|
| Unknown | Enable Media Replace | before 4.2.3 | 4.2.3 | Patch available | CNA |
- Enable Media Replace VendorUnknown Affected before 4.2.3 Fixed in 4.2.3 Patch available CNA
Remediation
Update Enable Media Replace to version 4.2.3, which fixes the flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-11-04
- Fix · CNA Enable Media Replace (Unknown) Fixed in 4.2.3
Timeline
- 2026-11-04 Threatist record created from CVE-2026-114431
- 2026-11-04 Alias added: GHSA-c8jg-ch76-q9xw
- 2026-11-04 CVSS score added · CISA ADP
- 2026-11-04 Weakness changed · CISA ADP
- 2026-11-04 CISA SSVC decision points changed
References
Sources
- CVE-2026-114431 · CVE Program
- CVE-2026-114431 · NVD
- FIRST EPSS
- GHSA-c8jg-ch76-q9xw · GitHub Advisory Database · CC BY 4.0
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