Security readout for executives and security teams
CVE-2017-20026 is a reflected cross-site scripting issue in HumHub 1.0.0 and 1.0.1. A remote attacker could cause malicious script to run in a user's browser if the user interacts with a crafted request. The business risk is mainly user-session abuse or misleading page content, not server takeover. Exposure is limited to organizations still running HumHub 1.0.0 or 1.0.1, especially public or broadly accessible community portals. The source bundle does not identify the vulnerable endpoint or function, so asset owners should verify version and vendor advisory details. Treat this as a moderate-priority cleanup item unless HumHub is internet-facing or used by high-value staff. The fix is a version upgrade, and the public disclosure increases the value of removing old vulnerable deployments. Mitigation focus: Upgrade affected HumHub installations to version 1.1.1 or later.; Check HumHub vendor guidance for any additional hardening or backported fixes.; Prioritize internet-facing or externally shared HumHub portals first..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-80: User-session and phishing behavior lookup
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Open ATT&CK lookupCVE-2017-20026 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://vuldb.com/?id.98923CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.