Nextcloud: potential RCE and XSS via file upload requiring user account and default settings

potential RCE and XSS via file upload requiring user account and default settings Requirements 1. User account that can upload files NO admin 2. User account name on creation usually the same as on creation/displayed name 3. data directory inside of nextcloud server folder suggested by...

Shopify: Reverse Proxy misroute leading to steal X-Shopify-Access-Token header

Hello Shopify team! I found out that on /admin/api/graphql endpoint server fetches content of Host header value $HTTPHost + /admin/api/graphql. If my own host was sent to server, request comes from ██████████or ██████████ your google cloud cluster. Also I can grab all reverse proxy headers...

Cloudflare: Private API key leakage due to lack of access control

The lack of access control on the https://mobilesdk.cloudflare.com/api/v1/ api allows for a remote attacker to access and steal a logged in user's private data. This can be done due to the lack of origin protection. An attacker can embed the config URI...

GitHub Security Lab: [codeql-go]: Add query to find use of constant state parameter in Oauth2 flow

This bug was reported directly to GitHub Security Lab...

curl: CVE-2020-8284: trusting FTP PASV responses

Summary: The issue here arises from the fact that curl by default has the option CURLOPTFTPSKIPPASVIP disabled by default. As a result, an attacker controlling the URL used by curl, can perform port scanning on behalf of the server where curl is running. This can be achieved by setting up a custo...

HackerOne: Second-order SOQL injection through email and campaign name parameter in Salesforce lead submission

The HackerOne directory contains profiles of bug bounty and vulnerability disclosure programs that aren't managed on HackerOne. These profiles can be claimed by the organization that manages it. As part of this flow, they will need to enter an email address to confirm that affiliation with the...

h1-ctf: [H1-2006] CTF Writeup

H1-2006 CTF Writeup I am fairly new to CTFs - this is just my second CTF after H1-415 CTF, at which I didn't get far at all. I think the most valuable thing I can do for anyone who comes across this writeup, is to describe exactly what I was thinking at each step along the way, including all my...

Starbucks: Misuse of an authentication cookie combined with a path traversal on app.starbucks.com permitted access to restricted data

zlz and rhynorater discovered that by obtaining a valid authentication cookie and then combining that with a path traversal, this allowed access to restricted data. noapearson assisted by providing additional information post discovery. @zlz / @rhynorater / @noapearson — thank you for reporting...

Visma Bug Bounty Program: [IDOR]Ability to Pause & Resume the Invoice of other users If GUID is known.

Insecure Direct Object Reference IDOR vulnerability is discovered via a certain endpoint and the application exposes a reference to an internal implementation object. It reveals the real identifier and format/pattern used of the element in the storage backend side...

Nord Security: Email address is not validated, No Rate Limit and RCE On Forgot Password Page Of affiliates.nordvpn.com

Go to https://affiliates.nordvpn.com/users/forgotpassword. Enter arbitrary string like %0a or %0a%0d as email. It says, No user account was found for the address given, which proves the query are going till the database. Intercept request using Burp Interceptor, copy to intruder Copy some 300...

New Relic: CRLF Injection in email address

The researcher discovered an issue where control characters can be used when intercepting a request to update an email address. This would result in an inaccessible account without intervention by our Support team. As denial-of-service is out of scope for our program, and since it is scoped to a...

Zomato: [Zomato's Blog] POST based XSS on https://www.zomato.com/blog/wp-admin/admin-ajax.php?td_theme_name=Newspaper&v=8.2

Issue details: POST based XSS Vulnerable URL: https://www.zomato.com/blog/wp-admin/admin-ajax.php?tdthemename=Newspaper&v=8.2 Vulnerable Parameter: loopStatemoduleId Payload: promptdocument.domain Steps to reproduce: As this is a post based you need to create a html csrf to trigger xss. HTML code...

Ubiquiti Inc.: Shell Injection via Web Management Console (dl-fw.cgi)

NCC Group Security Advisory https://www.nccgroup.trust -------------------------------------------- Shell Injection via Web Management Console Vendor: Ubiquiti Networks Vendor URL: https://www.ubnt.com Versions affected: airOS XM board line potentially all airOS lines, unverified Systems Affected...

curl: Secure cookies leaked to HTTP origins through HTTPS forwarding proxy

Summary: When curl accesses an http:// origin through an HTTPS forwarding proxy, it sends Secure cookies in the request. The cookies travel in cleartext between the proxy and the origin server, visible to the proxy operator and anyone on that network path. curl also reports CURLINFOSCHEME as...

U.S. Dept Of Defense: [█████] Bug Reports allow for Unrestricted File Upload

Unrestricted file upload was possible through the bug report feature of a web page, allowing an attacker to attach a malicious file to a bug report and execute malware on the support agent's system. The web server did not validate the extension and size of the uploaded file...

8x8: Exposed PHP dependencies at ██.8x8.com

A limited amount of hosts were exposing the PHP vendor directory, which exposed names of internal packages & dependencies. The issue has been rectified...

Glassdoor: Reflected XSS at https://www.glassdoor.com/ via the 'numSuggestions' parameter

Hi there, I have found the xss vulnerability at: https://www.glassdoor.com/ via parameter: numSuggestions Summary: Affected Parameter: numSuggestions Browsers tested: Firefox, Chrome, Edge latest version Steps To Reproduce: Go to:...

Starbucks: Unrestricted File Upload Leads to RCE on mobile.starbucks.com.sg

ko2sec discovered an .ashx endpoint on mobile.starbucks.com.sg intended for image files permitted unrestricted file type uploads which could lead to a potential RCE. ko2sec's thorough analysis provided additional endpoints on other out of scope domains that shared this vulnerability. @ko2sec —...

Weblate: Secret_key in GitHub

hello I have found secretkey in GitHub is public and noticed something this key have comment Make this unique, and don't share it with anybody. and it's public in GitHub also I noticed this file has coding to do the payment.db I think information like this must be private SECRETKEY =...

Courier: disable test send feature if user's email address isn't verified

Summary: There is no mechanism to limit the request in places while send the preview email Steps To Reproduce: There is a weak account registration process, which allow user to register and login without any email confirmation. L'say say for example that i'm the user A that want to send a phishin...

Node.js third-party modules: Prototype pollution in multipart parsing

I would like to report a prototype pollution attack in fastify-multipart it allows to crash a remote server parsing multipart requests by sending a specially crafted request. Module module name: fastify-multipart version: all versions before Detailed steps to reproduce with all required...

Revive Adserver: Open redirection bypass in /www/admin/campaign-modify.php

Description - There is an open redirect on /www/admin/campaign-modify.php?returnurl= F713773 - By using //// at the start of the link, you can bypass the open redirect filter. - example: /www/admin/campaign-modify.php?clientid=&campaignid=&returnurl=%2F%2F%2F%2Fhackerone.com Impact This...

U.S. Dept Of Defense: sql injection on /messagecenter/messagingcenter at https://www.███████/

Hi , i would like to report an issues that lead to SQL injection in search box at https://www.████/messagecenter/messagingcenter , if you add the character ' that usually used to test if the site have in sql injection the site will return with Incorrect syntax error that can confirm the site is...

Discourse: XSS Vulnerability on Image link parser

I found a XSS Cross-Site Scripting vulnerability, and it is present in the markdown parser when it tries to parse an image URL. To reproduce the vulnerability you need to add a fake image url like: http://host/path/to/image'onerror=alert1;//.png As you can see, we have an invalid image URL which...

Uzbey: Breach Attack Vulnerability

Breach Attack Vulnerability Respected Sir/Madam I Hope Your Cooperate With Me Cause It's Not Easy To Find Vulnerability On Your Official Website. Vulnerability description This web application is potentially vulnerable to the BREACH attack.An attacker with the ability to: Inject partial chosen...

U.S. Dept Of Defense: Reflected XSS via Keycloak on ███ [CVE-2021-20323]

The Keycloak 8.0 and prior versions contained a cross-site scripting vulnerability. An attacker could have executed arbitrary script by inserting a malicious payload in the path of a POST request to the /auth/realms/master/clients-registrations/openid-connect endpoint. This allowed the server to...

U.S. Dept Of Defense: LDAP Server NULL Bind Connection Information Disclosure

The LDAP server allowed anonymous access, which could lead to information disclosure. Attackers could exploit this vulnerability to gain access to sensitive information. The recommended mitigation is to configure the service to disallow NULL BINDs...

curl: CVE-2023-27536: GSS delegation too eager connection re-use

A vulnerability existed in libcurl that could allow the reuse of previously established connections when more strict or no delegation was requested, due to different CURLOPTGSSAPIDELEGATION options not being taken into consideration. An attacker could potentially exploit this vulnerability to...

GitHub Security Lab: ihsinme: CPP add query for CWE-788 Access of memory location after the end of a buffer using strlen.

This bug was reported directly to GitHub Security Lab...

Shopify: Stored XSS in Shopify Chat

1.install app Shopify Chat 2.Click chat on the shop homepage or Shopify Ping to send poc javascript:alert1//https://dqdqdqdqdq.myshopify.com 3.Click url, alert F657395 Impact 1.Front end user Self-XSS 2.Administrator XSS foreground user...

PUBG: RXSS to Stored XSS - forums.pubg.com | URL parameter

René Kroka found a Reflected XSS vulnerability that could be chained to a Stored XSS attack in the Invision Community forums software used by PUBG. By crafting a malicious URL the attacker is able to trigger Javascript to execute on their own page; known as Reflected XSS. The attacker then create...

Nextcloud: OAuth2 Access Token and App Password Security Vulnerability

The OAuth2 endpoint of the Nextcloud server was not following RFC6749. The server did not perform required verification of provided data. And the server did not properly rotate and expire access tokens. In case of a compromised OAuth client this could lead to unauthorized access. After working...

Internet Bug Bounty: Use After Free Vulnerability in session deserializer

https://bugs.php.net/bug.php?id=70219...

Shopify: Force 500 Internal Server Error on any shop (for one user)

There is very strange behavior. If user open urls like below: - https://whashp.myshopify.com/?previewthemeid=11288717 - or https://lmfshp.myshopify.com/?previewthemeid=11290937 He got redirect to shop https://whashp.myshopify.com/ and 500 Internal Server Error response, and reload does not help i...

Greenhouse.io: SMTP protection not used (please read carefully )

Details: Companies like Coinbase, Yahoo,Google,Facebook and even hackerone implemented a strict email security policy combining SPF, DKIM, and DMARC but I don't see taht from mailgreenhouse.ioru , You should apply strict SMPT policy to stop spoofed email sending from your domain. POC is attached...

curl: CVE-2026-4873: connection reuse ignores TLS requirement

A vulnerability was discovered in libcurl's connection reuse for cleartext-upgrade mail protocols. The vulnerability was that the later transfer's CURLOPTUSESSL option was not properly included if a plaintext connection was already open and reusable. This affected the smtp://, pop3://, and imap:/...

EXNESS: SSRF in graphQL query (pwapi.ex2b.com)

An SSRF vulnerability was discovered in the GraphQL query for allTicks on the pwapi.ex2b.com website. This vulnerability allowed an attacker to set the source parameter to perform arbitrary GET requests, potentially compromising internal services exposed to internal network requests...

Nextcloud: Nextcloud Desktop Client RCE via malicious URI schemes

Nextcloud Desktop utilizes QT's QDesktopServices::openUrl to open URLs. This function invokes the OS'/Desktop environment's default application to handling the URI scheme and file extension. During the Nextcloud Add Account flow, the server's login website is opened within a native window/WebView...

GlobaLeaks: Since no defined tries for incorrect answer, an attacker can brute the answers and post a submission

Logic of the attack pass 50 answers for per token.. if within the 50 answers this can be increased for more success rate, if there's a valid. the token becomes usable. and then submit the submission POST data. Screenshot of script running F733033 Screenshot of inbox F733034 Mitigation This can be...

Semrush: Open redirect in semrush.com

Summary: There is an open redirect on https://www.semrush.com/login/?redirectto=. By using /\ at the start of the link, you can bypass the open redirect filter. Description: An attacker can control the value of the "redirectto" parameter and make it redirect to a malicious endpoint. Steps To...

Khan Academy: Possible Subdomain Takeover

None of the weakness categories really fit this so I apologize for that. The subdomain learnstormindia.khanacademy.org points to 52.203.185.84 a webflow.io proxy server proxy-ssl.webflow.com. The CNAME entry in the subdomain is pointing to an external page service learnstormindia.khanacademy.org...

Trello: Full Sub Domain Takeover at help.trello.com.

Hey The subdomain http://help.trello.com./ uses helpscout to host docs While helpscout does not distinguish between help.trello.com. and help.trello.com Notice trailing dot I created a test page and hosted it for help.trello.com. and since DNS entry is already present http://help.trello.com./ now...

Vimeo: CRITICAL vulnerability - Insecure Direct Object Reference - Unauthorized access to `Videos` of Channel whose privacy is set to `Private`.

Hello, This time I found a IDORInsecure Direct Object Reference vulnerability. It allows an attacker to get unauthorized access to Videos of Channel whose privacy is set to Only moderators and people I choose without being a member. In simple words, we can access videos of private channel without...

Nextcloud: Valid share tokens allow to access tempory upload files of share owner

A vulnerability was discovered that allowed access to temporary upload files of a share owner using valid share tokens...

Mars: [XSS] Reflected XSS via POST request in (███████)

A reflected Cross-Site Scripting XSS vulnerability was identified in the celular parameter of a POST request to the homepage of a Mars-owned website. The vulnerability was classified as medium severity with a CVSS score of 6.2. The application failed to properly sanitize user input before renderi...

Internet Bug Bounty: CVE-2023-23914: HSTS ignored on multiple requests

Multiple requests made using curl's HSTS functionality ignored the HTTPS protocol and used an insecure clear-text HTTP step instead. This was due to the state not being properly carried on, allowing the bypass of intended security controls. The vulnerability was assigned CVE-2023-23914 and had a...

U.S. Dept Of Defense: Authentication Bypass Using Default Credentials on █████

An authentication bypass vulnerability was discovered on the admin console of █████████, allowing unauthorized access to the portal and its data using default credentials. The suggested mitigation is to change the credentials. No CVE numbers or affected product versions were mentioned...

Snapchat: Delete anyone's content spotlight remotely.

A vulnerability was discovered in Snapchat's Spotlight feature that allowed anyone to delete another user's content remotely. By intercepting and modifying the delete request, an attacker could replace the ID parameter with that of another user's video, resulting in the deletion of their content...

U.S. Dept Of Defense: XSS due to CVE-2020-3580 [███.mil]

Multiple vulnerabilities in the web services interface of Cisco Adaptive Security Appliance ASA Software and Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to conduct cross-site scripting XSS attacks against a user of the web services interface of an...

U.S. Dept Of Defense: critical information disclosure

Description: hey all , I have found critical information through this endpoint ████ on ███████ DB credentials such as DBNAME,DBUSER,DBPASSWORD,DBHOST, etc.. Impact full access control on DB service on website System Hosts ███ Affected Products and Versions CVE Numbers Steps to Reproduce Go to...