CWE · MITRE source
CWE-177Improper Handling of URL Encoding (Hex Encoding)
The product does not properly handle when all or part of an input has been URL encoded.
Last updated: 04 July 2026 11:13 UTC
Cumulative inbound coverage
How completely the frameworks we cross-walk collectively cover this — the verdict is the strongest single mapping (overlapping partials are not summed); breadth shows the corroboration behind it.
Collective: mostly · 4 mapping(s) from 2 framework(s): CAPEC 3 (mostly) · ATT&CK 1 (mostly)
NIST 800-53 r5 controls that address this weakness (0)AI
| Control | Title | Family | Why it addresses this CWE |
|---|---|---|---|
| No NIST controls proposed yet. | |||
MITRE ATT&CK techniques this weakness enables
Our own two-way CWE↔ATT&CK cross-walk — a direct mapping with no public source (the CWE→CAPEC→ATT&CK chain leaves most top weaknesses, incl. XSS and SQLi, mapped to nothing). Drafted by Grok and spot-checked by Claude Opus 4.8.
Direction: ← other covers this;
→ this covers other (F/M/P = full / mostly /
partial).
Top CVEs of this weakness type, ranked by Risk Priority
| CVE | Risk | CVSS | EPSS | Published |
|---|---|---|---|---|
CVE-2022-27780 | 5.5 | 7.5 | 0.0219 | 2022-06-02 |
CVE-2026-22031 | 5.5 | 8.4 | 0.0046 | 2026-01-19 |
CVE-2026-22037 | 5.5 | 8.4 | 0.0032 | 2026-01-19 |
CVE-2026-29045 | 5.5 | 7.5 | 0.0044 | 2026-03-04 |
CVE-2018-3718 | 3.5 | 5.3 | 0.0132 | 2018-06-07 |
CVE-2022-3854 | 3.5 | 6.5 | 0.0056 | 2023-03-06 |
CVE-2024-48866 | 3.5 | 5.3 | 0.0043 | 2024-12-06 |
CVE-2026-6414 | 3.5 | 5.9 | 0.0040 | 2026-04-16 |
CVE-2025-11990 | 1.5 | 3.1 | 0.0026 | 2025-11-15 |