Top 10 web hacking techniques of 2025
2026-04-28T20:51:59Z•05268689f5fecc4d7e524ed03d5ab488b59c1b6a7f8f9ee927234708874b7f13
CSP-bypassCSS-exfiltrationHTTP-desyncHttpOnly-bypassJWTSAMLSignSaboteurTRACETurbo-IntruderURL-validation-bypassWAF-bypassWebSocketXSS__Host__Secureauthentication-bypasscache-poisoningcookie-prefix-bypasscookie-sandwichnamespace-confusionparser-discrepancyrequest-smugglingsingle-packet-attacktiming-attacks","PDF-rendering-discrepancies","VS-Code-exploitweb-security
What happened
Collection of PortSwigger Research write-ups (2023–2026) highlighting multiple, actively exploitable web-security techniques. Notable items include full SAML authentication bypasses via parser/namespace inconsistencies (Ruby/PHP ecosystems and an exploit chain affecting GitLab Enterprise), widespread HTTP/1.1 desync and request smuggling concerns (including new TRACE-assisted exploitation and single-packet race techniques), cookie-prefix and HttpOnly bypass techniques ("cookie sandwich" and prefix discrepancies), tools for JWT forgery (SignSaboteur), CSS-based data exfiltration and XSS/XSLT/CX
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- portswigger_research
- Record identifier
- 05268689f5fecc4d7e524ed03d5ab488b59c1b6a7f8f9ee927234708874b7f13
- Enrichment time
- 2026-04-28T20:51:59Z
- AI-assisted enrichment
- Yes
This record may overlap with other records. Its enrichment can be incomplete or wrong, and machine assistance was used. Validate consequential decisions against the linked source and your own environment.