CVE-2026-55417 Chevereto private profile setting leaks username on /json endpoint

Chevereto is a self-hosted media-sharing platform. Starting in version 3.7.5 and prior to version 4.5.4, when a user enables the private profile option, visiting their profile HTML route /username correctly returns 404. However, the /json AJAX listing endpoint does not apply the same check. An...

CVE-2026-55417 Chevereto private profile setting leaks username on /json endpoint

Chevereto is a self-hosted media-sharing platform. Starting in version 3.7.5 and prior to version 4.5.4, when a user enables the private profile option, visiting their profile HTML route /username correctly returns 404. However, the /json AJAX listing endpoint does not apply the same check. An...

PYSEC-2026-1234 Calibre-Web Has a Stored Cross-Site Scripting (XSS) Vulnerability via the 'username' Field During User Creation

A Stored Cross-Site Scripting XSS vulnerability in Calibre-Web v0.6.25 allows attackers to inject malicious JavaScript into the 'username' field during user creation. The payload is stored unsanitized and later executed when the /ajax/listusers endpoint is accessed...

Calibre-Web Has a Stored Cross-Site Scripting (XSS) Vulnerability via the 'username' Field During User Creation

A Stored Cross-Site Scripting XSS vulnerability in Calibre-Web v0.6.25 allows attackers to inject malicious JavaScript into the 'username' field during user creation. The payload is stored unsanitized and later executed when the /ajax/listusers endpoint is accessed...

pgAdmin is affected by an LDAP injection vulnerability

pgAdmin = 9.9is affected by an LDAP injection vulnerability in the LDAP authentication flow that allows an attacker to inject special LDAP characters in the username, causing the DC/LDAP server and the client to process an unusual amount of data DOS...

Calibre Web and Autocaliweb have a ReDoS vulnerability

ReDoS in stripwhitespaces function in cps/stringhelper.py in Calibre Web and Autocaliweb allows unauthenticated remote attackers to cause denial of service via specially crafted username parameter that triggers catastrophic backtracking during login. This issue affects Calibre Web: 0.6.24...

PYSEC-2026-1986 Transformers's Improper Input Validation vulnerability can be exploited through username injection

Hugging Face Transformers versions up to 4.49.0 are affected by an improper input validation vulnerability in the imageutils.py file. The vulnerability arises from insecure URL validation using the startswith method, which can be bypassed through URL username injection. This allows attackers to...

PYSEC-2026-1590 Lord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function

The parisneo/lollms repository is affected by a timing attack vulnerability in the authenticateuser function within the lollmsauthentication.py file. This vulnerability allows attackers to enumerate valid usernames and guess passwords incrementally by analyzing response time differences. The...

Lord of Large Language Models vulnerable to Observable Discrepancy attack via authenticate_user function

The parisneo/lollms repository is affected by a timing attack vulnerability in the authenticateuser function within the lollmsauthentication.py file. This vulnerability allows attackers to enumerate valid usernames and guess passwords incrementally by analyzing response time differences. The...

Transformers's Improper Input Validation vulnerability can be exploited through username injection

Hugging Face Transformers versions up to 4.49.0 are affected by an improper input validation vulnerability in the imageutils.py file. The vulnerability arises from insecure URL validation using the startswith method, which can be bypassed through URL username injection. This allows attackers to...

PYSEC-2026-1331 Timing-Based Username Enumeration Vulnerability in Fides Webserver Authentication

A timing-based username enumeration vulnerability has been identified in Fides Webserver authentication. This vulnerability allows an unauthenticated attacker to determine the existence of valid usernames by analyzing the time it takes for the server to respond to login requests. The discrepancy ...

Timing-Based Username Enumeration Vulnerability in Fides Webserver Authentication

A timing-based username enumeration vulnerability has been identified in Fides Webserver authentication. This vulnerability allows an unauthenticated attacker to determine the existence of valid usernames by analyzing the time it takes for the server to respond to login requests. The discrepancy ...

vantage6 vulnerable to a username timing attack on recover password/MFA token

ImpactMuch like https://github.com/vantage6/vantage6/security/advisories/GHSA-45gq-q4xh-cp53, it is possible to find which usernames exist in vantage6 by calling the API routes /recover/lost and /2fa/lost, which send emails to users if they have lost their password or MFA token. Usernames can be...

PYSEC-2026-2005 vantage6 vulnerable to a username timing attack on recover password/MFA token

Impact Much like https://github.com/vantage6/vantage6/security/advisories/GHSA-45gq-q4xh-cp53, it is possible to find which usernames exist in vantage6 by calling the API routes /recover/lost and /2fa/lost, which send emails to users if they have lost their password or MFA token. Usernames can be...

ZenML Server Remote Privilege Escalation Vulnerability

ZenML Server in the ZenML package before 0.46.7 for Python allows remote privilege escalation because the /api/v1/users/usernameorid/activate REST API endpoint allows access on the basis of a valid username along with a new password in the request body. These are also patched versions: 0.44.4,...

PYSEC-2026-2008 vantage6 vulnerable to username timing attack

Impact It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks Workarounds No...

PYSEC-2026-1818 pyload Log Injection vulnerability

Summary A log injection vulnerability was identified in pyload. This vulnerability allows any unauthenticated actor to inject arbitrary messages into the logs gathered by pyload. Details pyload will generate a log entry when attempting to sign in with faulty credentials. This entry will be in the...

PYSEC-2026-2006 Defining resource name as integer may give unintended access in vantage6

Impact Malicious users may try to get access to resources they are not allowed to see, by creating resources with integers as names. One example where this is a risk, is when users define which users are allowed to run algorithms on their node. This may be defined by username or user id. Now, for...

CERT/CC Warns of Hidden Admin Backdoor in Tenda Router Firmware

Several versions of firmware released by Chinese network device manufacturer Tenda have been found to embed an undocumented authentication backdoor that enables administrative access to the devices' web management interfaces, the CERT Coordination Center CERT/CC warned Monday. "An attacker can...

PT-2026-60913

Impact WebauthnSimpleFakeCredentialGenerator is the library-provided default implementation of the FakeCredentialGenerator interface. It returns a stable list of decoy PublicKeyCredentialDescriptor objects for a given username so that an assertion request for an unknown user looks the same as a...