CERN Indico before 2.3.4 can use an attacker-supplied Host header in a password reset link.
Priority LOW 35CWE-640Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-640.
Summary
CERN Indico before 2.3.4 can use an attacker-supplied Host header in a password reset link.
Why it matters now
EPSS 0.01047 64th percentileScored 2026-11-07
Fix Fixed indico (PyPI): 2.3.4
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | indico (PyPI) | before 2.3.4 | 2.3.4 | Patch available | GHSA-wgpj-7c2j-vfjm |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- indico (PyPI) Vendor— Affected before 2.3.4 Fixed in 2.3.4 Patch available GHSA-wgpj-7c2j-vfjm
Remediation
- Fix · GHSA-wgpj-7c2j-vfjm indico (PyPI) Fixed in 2.3.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-30185
- 2026-10-03 Alias added: GHSA-wgpj-7c2j-vfjm
References
Advisory 4
More Indico vulnerabilities
- TI-2024-34052 Authorization bypass in Indico CVSS 3.1HIGH 7.5
- TI-2026-25492 Indico discloses local files resulting in Remote Code Execution through LaTeX injection CVSS 4.0HIGH 7.7
- TI-2026-20806 Indico has Server-Side Request Forgery (SSRF) in multiple places CVSS 4.0MEDIUM 6.9
- TI-2026-22632 Indico missing access check in event series management API CVSS 3.1MEDIUM 6.5
- TI-2024-30448 Indico has a Cross-Site-Scripting during account creation CVSS 3.1MEDIUM 6.1
- TI-2025-33566 Indico vulnerable to user enumeration via API endpoint CVSS 4.0MEDIUM 5.3
Sources
- CVE-2021-30185 · CVE Program
- CVE-2021-30185 · NVD
- FIRST EPSS
- GHSA-wgpj-7c2j-vfjm · GitHub Advisory Database · CC BY 4.0
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