Cross-site scripting in dash-core-components
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
Versions of the package dash-core-components before 2.13.0; versions of the package dash-core-components before 2.0.0; versions of the package dash before 2.15.0; versions of the package dash-html-components before 2.0.0; versions of the package dash-html-components before 2.0.16 are vulnerable to Cross-site Scripting (XSS) when the href of the a tag is controlled by an adversary. An authenticated attacker who stores a view that exploits this vulnerability could steal the data that's visible to another user who opens that view - not just the data already included on the page, but they could also, in theory, make additional requests and access other data accessible to this user. In some cases, they could also steal the access tokens of that user, which would allow the attacker to act as that user, including viewing other apps and resources hosted on the same server. **Note:** This is only exploitable in Dash apps that include some mechanism to store user input to be reloaded by a different user.
Why it matters now
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 |
|---|---|---|---|---|---|
| — | dash-core-components | before 2.13.0 | 2.13.0 | Patch available | CNA |
| — | dash-core-components | before 2.0.0 | 2.0.0 | Patch available | CNA |
| — | dash | before 2.15.0 | 2.15.0 | Patch available | CNA |
| — | dash-html-components | before 2.0.0 | 2.0.0 | Patch available | CNA |
| — | dash-html-components | before 2.0.16 | 2.0.16 | Patch available | CNA |
| — | dash-core-components (npm) | before 2.13.0 | 2.13.0 | Patch available | GHSA-547x-748v-vp6p |
| — | dash-html-components (PyPI) | before 2.0.0 | 2.0.0 | Patch available | GHSA-547x-748v-vp6p |
| — | dash-core-components (PyPI) | before 2.0.0 | 2.0.0 | Patch available | GHSA-547x-748v-vp6p |
| — | dash (PyPI) | before 2.15.0 | 2.15.0 | Patch available | GHSA-547x-748v-vp6p |
| — | dash-html-components (npm) | before 2.0.16 | 2.0.16 | Patch available | GHSA-547x-748v-vp6p |
- dash-core-components Vendor— Affected before 2.13.0 Fixed in 2.13.0 Patch available CNA
- dash-core-components Vendor— Affected before 2.0.0 Fixed in 2.0.0 Patch available CNA
- dash Vendor— Affected before 2.15.0 Fixed in 2.15.0 Patch available CNA
- dash-html-components Vendor— Affected before 2.0.0 Fixed in 2.0.0 Patch available CNA
- dash-html-components Vendor— Affected before 2.0.16 Fixed in 2.0.16 Patch available CNA
- dash-core-components (npm) Vendor— Affected before 2.13.0 Fixed in 2.13.0 Patch available GHSA-547x-748v-vp6p
- dash-html-components (PyPI) Vendor— Affected before 2.0.0 Fixed in 2.0.0 Patch available GHSA-547x-748v-vp6p
- dash-core-components (PyPI) Vendor— Affected before 2.0.0 Fixed in 2.0.0 Patch available GHSA-547x-748v-vp6p
- dash (PyPI) Vendor— Affected before 2.15.0 Fixed in 2.15.0 Patch available GHSA-547x-748v-vp6p
- dash-html-components (npm) Vendor— Affected before 2.0.16 Fixed in 2.0.16 Patch available GHSA-547x-748v-vp6p
Remediation
- Fix · CNA dash-core-components Fixed in 2.13.0
- Fix · CNA dash-core-components Fixed in 2.0.0
- Fix · CNA dash Fixed in 2.15.0
- Fix · CNA dash-html-components Fixed in 2.0.0
- Fix · CNA dash-html-components Fixed in 2.0.16
- Fix · GHSA-547x-748v-vp6p dash-core-components (npm) Fixed in 2.13.0 Advisory →
- Fix · GHSA-547x-748v-vp6p dash-html-components (PyPI) Fixed in 2.0.0 Advisory →
- Fix · GHSA-547x-748v-vp6p dash-core-components (PyPI) Fixed in 2.0.0 Advisory →
- Fix · GHSA-547x-748v-vp6p dash (PyPI) Fixed in 2.15.0 Advisory →
- Fix · GHSA-547x-748v-vp6p dash-html-components (npm) Fixed in 2.0.16 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-21485
- 2026-10-03 Alias added: GHSA-547x-748v-vp6p
References
Patch 2
Advisory 2
Other 5
- https://github.com/plotly/dash/releases/tag/v2.15.0
- https://github.com/plotly/dash
- https://github.com/pypa/advisory-database/tree/main/vulns/dash-core-components/PYSEC-2026-219.yaml
- https://github.com/pypa/advisory-database/tree/main/vulns/dash-html-components/PYSEC-2026-220.yaml
- https://github.com/pypa/advisory-database/tree/main/vulns/dash/PYSEC-2024-35.yaml
Sources
- CVE-2024-21485 · CVE Program
- CVE-2024-21485 · NVD
- FIRST EPSS
- GHSA-547x-748v-vp6p · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences