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Bidda Sovereign Intelligence · 10,065 Verified Nodes · 39 Sovereign Pillars

MITRE CAPEC-461: Web Services API Signature Forgery Leveraging Hash Function Extension Weakness (Standard Attack Pattern - High Severity)

MITRE CAPEC-461 (Web Services API Signature Forgery Leveraging Hash Function Extension Weakness) is a standard-level attack pattern in the MITRE Common…

Compliance Node Overview

MITRE CAPEC-461 (Web Services API Signature Forgery Leveraging Hash Function Extension Weakness) is a standard-level attack pattern in the MITRE Common Attack Pattern Enumeration and Classification. An adversary utilizes a hash function extension/padding weakness, to modify the parameters passed to the web service requesting authentication by generating their own call in order to generate a legitimate signature hash (as described in the notes), without knowledge of the secret token sometimes provided by the web service. Likelihood of attack: Unknown. Typical severity: High. Maps to weaknesses CWE-328, CWE-290.

Pillar: Cybersecurity · Authority: MITRE Corporation · Version: 1.0.0 · Last updated: 2026-05-25

Primary source: https://capec.mitre.org/data/definitions/461.html

SHA-256 integrity: 6d6aba0c85c6fd2a466be679a90745654dbf61cc0d5af0fd7720e28f13043583

Primary Citations — 8 traced to source

MITRE CAPEC-461: Web Services API Signature Forgery Leveraging Hash Function Extension Weakness (https://capec.mitre.org/data/definitions/461.html)
CWE-328: underlying weakness (http://cwe.mitre.org/data/definitions/328.html)

+ 6 more citations (full bibliography, deterministic workflow, actionable schema and crosswalks) included in the vault unlock — $0.01 via Skyfire / L402 / Direct Base USDC.

Access

Discovery (free): /api/v1/nodes/mitre-capec-capec-461-web-services-api-signature-forgery-leveraging-hash-function.json — 6-field metadata
Vault (full node): /api/v1/vault/nodes/mitre-capec-capec-461-web-services-api-signature-forgery-leveraging-hash-function.json — full 13-key payload, $0.01 USDC (L402/Skyfire/Direct Base)
Canonical URL: https://bidda.com/intelligence/mitre-capec-capec-461-web-services-api-signature-forgery-leveraging-hash-function
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