Cross Site Request Forgery (CSRF)

Last updated: February 8, 2026Reviewed date: February 8, 2026Reading time: 3 min read
Patient Tools

Read, save, and share this guide

Use these quick tools to make this medical article easier to read, print, save, or share with a family member.

Article Summary

" tabindex="0" role="button" style="box-sizing: border-box; position: relative; display: flex !important; padding: 0px !important; font-size: 14px; font-weight: var(--base-text-weight-medium, 500); line-height: 20px; white-space: nowrap; vertical-align: middle; cursor: pointer; user-select: none; border: 0px; border-radius: 6px; appearance: none; color: var(--fgColor-accent, var(--color-accent-fg)); background-color: transparent; box-shadow: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color, box-shadow, border-color; justify-content: center !important; align-items: center !important; margin: var(--base-size-8, 8px) !important; width: var(--control-small-size, 28px);...

Key Takeaways

  • This article explains Related Attacks in simple medical language.
  • This article explains Related Controls in simple medical language.
  • This article explains References in simple medical language.
Educational health guideWritten for patient understanding and clinical awareness.
Reviewed content workflowUse writer and reviewer profiles for stronger trust.
Emergency safety firstUrgent warning signs are highlighted below.

Seek urgent medical care if you notice

These warning signs are general safety guidance. Local emergency numbers and clinical judgment should always come first.

  • Severe symptoms, breathing difficulty, fainting, confusion, or rapidly worsening illness.
  • New weakness, severe pain, high fever, or symptoms after a serious injury.
  • Any symptom that feels urgent, unusual, or unsafe for the patient.
1

Emergency now

Use emergency care for severe, sudden, rapidly worsening, or life-threatening symptoms.

2

See a doctor

Book a professional medical evaluation if symptoms persist, worsen, recur often, affect daily activities, or occur in a high-risk patient.

3

Learn safely

Use this article to understand possible causes, tests, treatment options, prevention, and questions to ask your clinician.

” tabindex=”0″ role=”button” style=”box-sizing: border-box; position: relative; display: flex !important; padding: 0px !important; font-size: 14px; font-weight: var(–base-text-weight-medium, 500); line-height: 20px; white-space: nowrap; vertical-align: middle; cursor: pointer; user-select: none; border: 0px; border-radius: 6px; appearance: none; color: var(–fgColor-accent, var(–color-accent-fg)); background-color: transparent; box-shadow: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color, box-shadow, border-color; justify-content: center !important; align-items: center !important; margin: var(–base-size-8, 8px) !important; width: var(–control-small-size, 28px); height: var(–control-small-size, 28px);”>

Fortunately, this request will not be executed by modern web browsers thanks to same-origin policy restrictions. This restriction is enabled by default unless the target web site explicitly opens up cross-origin requests from the attacker’s (or everyone’s) origin by using CORS with the following header:

Access-Control-Allow-Origin: *

  • Add a per-request nonce to the URL and all forms in addition to the standard session. This is also referred to as “form keys”. Many frameworks (e.g., Drupal.org 4.7.4+) either have or are starting to include this type of protection “built-in” to every form so the programmer does not need to code this protection manually.
  • Add a hash (session id, function name, server-side secret) to all forms.
  • For .NET, add a session identifier to ViewState with MAC (described in detail in the DotNet Security Cheat Sheet).
  • Checking the referrer header in the client’s HTTP request can prevent CSRF attacks. Ensuring that the HTTP request has come from the original site means that attacks from other sites will not function. It is very common to see referrer header checks used on embedded network hardware due to memory limitations.
    • XSS can be used to bypass both referrer and token based checks simultaneously. For instance, the Samy worm used an XMLHttpRequest to obtain the CSRF token to forge requests.
  • “Although CSRF is fundamentally a problem with the web application, not the user, users can help protect their accounts at poorly designed sites by logging off the site before visiting another, or clearing their browser’s cookies at the end of each browser session.” —http://en.wikipedia.org/wiki/Cross-site_request_forgery\#_note-1

References

“This paper serves as a living document for Cross-Site Request Forgery issues. This document will serve as a repository of information from existing papers, talks, and mailing list postings and will be updated as new information is discovered.”*

Patient safety assistant

Check your symptom safely

Hi, I am RX Symptom Navigator. I can help you understand what to read next and what warning signs need care.
Warning: Do not use this in emergencies, pregnancy, severe illness, or as a substitute for a doctor. For children or teens, use with a parent/guardian and clinician.
A rural-friendly guide: warning signs, when to see a doctor, related articles, tests to discuss, and OTC safety education.
1 Symptom 2 Severity 3 Safe guidance
First safety question

Is there chest pain, breathing trouble, fainting, confusion, severe bleeding, stroke-like weakness, severe injury, or pregnancy danger sign?

Choose quickly

Browse by body area
Start here: Write or select a symptom. The guide will show warning signs, doctor guidance, diagnostic tests to discuss, OTC safety education, and related RX articles.

Important: This tool is educational only. It cannot diagnose, treat, or replace a doctor. OTC information is not a prescription. In an emergency, contact local emergency services or go to the nearest hospital.

Doctor visit helper

Prepare before seeing a doctor

A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Avoid heavy lifting, sudden bending, and prolonged bed rest.
  • Use comfortable posture and gentle movement as tolerated.
  • Discuss physiotherapy, X-ray, or MRI only when clinically needed.

OTC medicine safety

  • For mild back pain, pain-relief medicine may be discussed with a doctor or pharmacist.
  • Avoid repeated painkiller use if you have kidney disease, stomach ulcer, uncontrolled blood pressure, or are taking blood thinners.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Back pain with leg weakness, numbness around private area, loss of urine/stool control, fever, cancer history, or major injury needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Back pain care roadmap

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • New leg weakness, numbness around private area, or loss of bladder/bowel control
  • Back pain after major injury, fever, unexplained weight loss, cancer history, or severe night pain
Doctor / service to discuss: Orthopedic/spine specialist, physical medicine doctor, physiotherapist under guidance, or qualified clinician.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Discuss neurological examination first. X-ray or MRI may be needed only when red flags, injury, nerve weakness, or persistent severe symptoms are present.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.
  • Avoid forceful massage or bone-setting when there is weakness, injury, fever, or nerve symptoms.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

RX Patient Help

Ask a health question safely

Write your symptom story. A health professional or site editor can review it before any answer is prepared. This box is not for emergency care.

Emergency first: Severe chest pain, breathing trouble, unconsciousness, stroke signs, severe injury, heavy bleeding, or rapidly worsening symptoms need urgent local medical care now.

Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.

References

Add references, clinical guidelines, textbooks, journal articles, or trusted medical sources here. You can edit this area from the RX Article Professional Blocks panel.

More from this topic
  1. Transient Blockage of the Internal Iliac Artery

    The internal iliac artery is a crucial blood vessel in the pelvis, responsible for supplying blood to various organs and tissues in the lower abdomen and...

    January 25, 2024 • Rx iT World Hacking Tutorial
  2. GraphQL

    GraphQL is an open source query language originally developed by Facebook that can be used to build APIs as an alternative to REST and SOAP. It has...

    January 25, 2024 • Rx iT World Hacking Tutorial
  3. Forgot Password Service

    In order to implement a proper user management system, systems integrate a Forgot Password service that allows the user to request a password reset. Even though this functionality...

    January 25, 2024 • Rx iT World Hacking Tutorial
  4. File upload

    File upload is becoming a more and more essential part of any application, where the user is able to upload their photo, their CV, or a...

    January 25, 2024 • Rx iT World Hacking Tutorial
  5. Error Handling

    Error handling is a part of the overall security of an application. Except in movies, an attack always begins with a Reconnaissance phase in which the attacker will...

    January 25, 2024 • Rx iT World Hacking Tutorial
  6. The .NET Framework

    The .NET Framework is Microsoft’s principal platform for enterprise development. It is the supporting API for ASP.NET, Windows Desktop applications, Windows Communication Foundation services, SharePoint, Visual...

    January 25, 2024 • Rx iT World Hacking Tutorial
  7. Docker Containerization Technology

    Docker is the most popular containerization technology. Upon proper use, it can increase the level of security (in comparison to running applications directly on the host)....

    January 25, 2024 • Rx iT World Hacking Tutorial
  8. Django framework is a powerful Python web framework

    The Django framework is a powerful Python web framework, and it comes with built-in security features that can be used out-of-the-box to prevent common web vulnerabilities....

    January 25, 2024 • Rx iT World Hacking Tutorial
  9. Django REST Framework

    The Django REST framework abstracts developers from quite a bit of tedious work and provides the means to build APIs quickly and with ease using Django....

    January 24, 2024 • Rx iT World Hacking Tutorial
  10. Guidance on Deserializing Objects Safely

    Serialization is the process of turning some object into a data format that can be restored later. People often serialize objects in order to save them for...

    January 24, 2024 • Rx iT World Hacking Tutorial