Shuup - Reflected XSS in Error Page
Priority MEDIUM 60CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
In Shuup, versions 1.6.0 through 2.10.8 are vulnerable to reflected Cross-Site Scripting (XSS) that allows execution of arbitrary javascript code on a victim browser. This vulnerability exists due to the error page contents not escaped.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00955 61st percentileScored 2026-11-07
Fix Fixed shuup (PyPI): 2.11.0
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 |
|---|---|---|---|---|---|
| shuup | shuup | 1.6.0 and later | — | No fix listed | CNA |
| — | shuup (PyPI) | 1.6.0 to before 2.11.0 | 2.11.0 | Patch available | GHSA-5pcx-vqjp-p34w |
- shuup Vendorshuup Affected 1.6.0 and later Fixed in — No fix listed CNA
- shuup (PyPI) Vendor— Affected 1.6.0 to before 2.11.0 Fixed in 2.11.0 Patch available GHSA-5pcx-vqjp-p34w
Remediation
- Fix · GHSA-5pcx-vqjp-p34w shuup (PyPI) Fixed in 2.11.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-25963
- 2026-10-03 Alias added: GHSA-5pcx-vqjp-p34w
References
Advisory 2
More Shuup vulnerabilities
- TI-2021-07968 Shuup - Formula Injection in Checkout Addresses CVSS 3.1HIGH 8.8
Sources
- CVE-2021-25963 · CVE Program
- CVE-2021-25963 · NVD
- FIRST EPSS
- GHSA-5pcx-vqjp-p34w · GitHub Advisory Database · CC BY 4.0
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