CSRF vulnerability in CIRCL Vulnerability-Lookup
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
In affected versions, vulnerability-lookup handled user-controlled content in comments and bundles in an unsafe way, which could lead to stored Cross-Site Scripting (XSS). On the backend, the related_vulnerabilities field of bundles accepted arbitrary strings without format validation or proper sanitization. On the frontend, comment and bundle descriptions were converted from Markdown to HTML and then injected directly into the DOM using string templates and innerHTML. This combination allowed an attacker who could create or edit comments or bundles to store crafted HTML/JavaScript payloads which would later be rendered and executed in the browser of any user visiting the affected profile page (user.html). This issue affects Vulnerability-Lookup: before 2.18.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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
Remediation
- Fix · CNA Vulnerability-Lookup (CIRCL) Fixed in 2.18.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
CIRCL Vulnerability-Lookup 2.18.0
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2025-27742 Improper Restriction of Excessive Authentication Attempts vulnerability in CIRCL Vulnerability-LookupPriority LOW 35
- TI-2025-27743 CSRF vulnerability in CIRCL Vulnerability-LookupPriority LOW 32
Timeline
- 2026-10-02 Threatist record created from CVE-2025-42620
- 2026-10-03 Alias added: GHSA-r226-j7pf-48g6
References
More CIRCL vulnerabilities
- TI-2021-20557 lib/DatabaseLayer.py in cve-search before 4.1.0 allows regular expression injection… CVSS 3.1HIGH 7.5
- TI-2026-28398 Stored XSS in modal item preview for long item content in AIL Framework CVSS 4.0HIGH 8.5
- TI-2020-06847 Global.py in AIL framework 2.8 allows path traversal. CVSS 3.1HIGH 7.5
- TI-2025-27742 Improper Restriction of Excessive Authentication Attempts vulnerability in CIRCL Vulnerability-Lookup CVSS 4.0HIGH 8.1
- TI-2025-27743 CSRF vulnerability in CIRCL Vulnerability-Lookup CVSS 4.0HIGH 7.0
- TI-2023-09040 workers/extractor.py in Pandora (aka pandora-analysis/pandora) 1.3.0 allows a denial of… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2025-42620 · CVE Program
- CVE-2025-42620 · NVD
- FIRST EPSS
- GHSA-r226-j7pf-48g6 · GitHub Advisory Database · CC BY 4.0
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