CVE-2026-14687
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XSummary
CVE-2026-14687 is a medium-severity Partial String Comparison (CWE-187) vulnerability. Its CVSS base score is 5.5 (Medium).
Operationally, ranked at the 26th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and SI-2 (Flaw Remediation) — see the control section below for these in your framework.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-41709
Vulnerability Data
A vulnerability was determined in 666ghj BettaFish up to 1.2.1. Impacted is the function _deduplicate_results of the file InsightEngine/agent.py of the component InsightEngine search-result Deduplication. Executing a manipulation can lead to partial string comparison. The attack can be launched remotely.…
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The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Insufficient information to map techniques.CVEs Like This One
Affected Assets
Mitigating Controls
Control response
Mitigating Controls (NIST 800-53 r5) AI
Directly enforces validation of string inputs and comparisons in _deduplicate_results, preventing partial-match logic flaws (CWE-187).
Requires integrity checks on agent.py code and search-result handling to detect unauthorized or flawed comparison behavior.
Mandates timely application of the pending deduplication fix once the public PR is accepted.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect and prevent partial string comparison flaws before deployment.
Secure development lifecycle practices can include requirements to avoid partial string comparisons in authentication or validation logic.
Application security requirements can mandate full, exact comparisons for sensitive operations.
Secure system architecture principles discourage unsafe partial comparisons in critical paths.
Secure coding standards can explicitly prohibit substring-based comparisons for security decisions.
Secure authentication mechanisms can reduce reliance on partial string comparisons for credential or token validation.