In WAF we (should not) trust
blog.quarkslab.com | research | #appsec | #web-security | #command-obfuscation | #waf | #http | #pentest | #payload-obfuscation | #waf-bypass
Summary
Quarkslab deep-dives WAF bypasses: how blacklists, penalty boxes, rate limiting and parsing discrepancies between a WAF and its backend can be abused to sneak malicious payloads through.
- Published
- Collected
--- id: 4316 title: "In WAF we (should not) trust" source_domain: blog.quarkslab.com source_url: "https://blog.quarkslab.com/in-waf-we-should-not-trust.html" published_at: "2026-03-25 23:00" tags: ["appsec", "web-security", "command-obfuscation", "waf", "http", "pentest", "payload-obfuscation", "waf-bypass"] phying_url: "https://phying.com/item/4316" lang: en --- # In WAF we (should not) trust ## Summary Quarkslab deep-dives WAF bypasses: how blacklists, penalty boxes, rate limiting and parsing discrepancies between a WAF and its backend can be abused to sneak malicious payloads through. ## Intelligence Metadata - **Sources:** blog.quarkslab.com - **Published:** 2026-03-25 23:00 - **Original:** https://blog.quarkslab.com/in-waf-we-should-not-trust.html - **Phying News:** https://phying.com/item/4316