bug-bounty490
google398
microsoft329
xss293
facebook288
rce199
exploit191
apple187
malware173
cve127
account-takeover113
bragging-post101
csrf86
privilege-escalation85
phishing81
browser80
supply-chain67
writeup66
dos66
stored-xss64
react64
authentication-bypass62
reflected-xss57
cloudflare56
node55
reverse-engineering53
ssrf51
aws51
docker50
input-validation48
access-control47
cross-site-scripting46
oauth46
smart-contract45
web345
ethereum43
defi42
sql-injection42
lfi41
web-security40
info-disclosure40
cloud39
web-application39
race-condition38
pentest37
ctf36
idor35
burp-suite35
vulnerability-disclosure34
html-injection33
0
9/10
vulnerability
A critical XSS vulnerability on Facebook's CDN was achieved by encoding malicious JavaScript into PNG IDAT chunks, uploading the image as an advertisement, then serving it with an .html extension to trigger HTML interpretation via MIME sniffing. The attacker leveraged document.domain to access the fb_dtsg CSRF token from www.facebook.com and bypass LinkShim protections.
xss
content-type-sniffing
cdn-security
png-exploitation
idat-chunk
deflate-compression
mime-type-bypass
csrf-token-extraction
document-domain
link-shim-bypass
facebook
akamai
image-upload
payload-encoding
Facebook
Akamai
akamaihd.net
fbcdn.net
photo.facebook.com
fnt.pe
phwd