Session Hijacking

flarum/core is vulnerable to Session Hijacking. The vulnerability is due to improper scoping of cookies, allowing an attacker-controlled subdomain to set cookies for the parent domain...

CVE-2025-27794

Flarum is open-source forum software. A session hijacking vulnerability exists in versions prior to 1.8.10 when an attacker-controlled authoritative subdomain under a parent domain e.g., subdomain.host.com sets cookies scoped to the parent domain .host.com. This allows session token replacement f...

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Overview flarum/core is a simple discussion platform for your website. Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component 'Injection' via authoritative subdomain cookie overwrite. An attacker controlling a...

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Overview Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component 'Injection' via authoritative subdomain cookie overwrite. An attacker controlling a subdomain under the parent domain can set cookies scoped to the...

GHSA-HG9J-64WP-M9PX Flarum Vulnerable to Session Hijacking via Authoritative Subdomain Cookie Overwrite

Summary A session hijacking vulnerability exists when an attacker-controlled authoritative subdomain under a parent domain e.g., subdomain.host.com sets cookies scoped to the parent domain .host.com. This allows session token replacement for applications hosted on sibling subdomains e.g.,...

Flarum Vulnerable to Session Hijacking via Authoritative Subdomain Cookie Overwrite

Summary A session hijacking vulnerability exists when an attacker-controlled authoritative subdomain under a parent domain e.g., subdomain.host.com sets cookies scoped to the parent domain .host.com. This allows session token replacement for applications hosted on sibling subdomains e.g.,...

CVE-2025-27794

Flarum is open-source forum software. A session hijacking vulnerability exists in versions prior to 1.8.10 when an attacker-controlled authoritative subdomain under a parent domain e.g., subdomain.host.com sets cookies scoped to the parent domain .host.com. This allows session token replacement f...

CVE-2025-27794

Summary: CVE-2025-27794 affects Flarum versions prior to 1.8.10, where an attacker-controlled authoritative subdomain can set cookies for the parent domain, potentially enabling session hijacking on sibling subdomains. What is affected: Flarum core (pre-1.8.10) with cookies scoped to a parent dom...

CVE-2025-27794 Flarum Vulnerable to Session Hijacking via Authoritative Subdomain Cookie Overwrite

Flarum is open-source forum software. A session hijacking vulnerability exists in versions prior to 1.8.10 when an attacker-controlled authoritative subdomain under a parent domain e.g., subdomain.host.com sets cookies scoped to the parent domain .host.com. This allows session token replacement f...

CVE-2025-27794

Flarum is open-source forum software. A session hijacking vulnerability exists in versions prior to 1.8.10 when an attacker-controlled authoritative subdomain under a parent domain e.g., "subdomain.host.com" sets cookies scoped to the parent domain ".host.com". This allows session token replaceme...

CVE-2025-27794 Flarum Vulnerable to Session Hijacking via Authoritative Subdomain Cookie Overwrite

Flarum is open-source forum software. A session hijacking vulnerability exists in versions prior to 1.8.10 when an attacker-controlled authoritative subdomain under a parent domain e.g., subdomain.host.com sets cookies scoped to the parent domain .host.com. This allows session token replacement f...

CVE-2025-27794 Flarum Vulnerable to Session Hijacking via Authoritative Subdomain Cookie Overwrite

Flarum is open-source forum software. A session hijacking vulnerability exists in versions prior to 1.8.10 when an attacker-controlled authoritative subdomain under a parent domain e.g., subdomain.host.com sets cookies scoped to the parent domain .host.com. This allows session token replacement f...

CVE-2025-27794: Improper Neutralization of Special Elements in Output Used by a Downstream Component

Flarum is open-source forum software. A session hijacking vulnerability exists in versions prior to 1.8.10 when an attacker-controlled authoritative subdomain under a parent domain e.g., subdomain.host.com sets cookies scoped to the parent domain .host.com. This allows session token replacement f...

DNSSEC NSEC. The accidental treasure map to your subdomains

TL;DR: DNSSEC secures DNS but may unintentionally expose domain structures via NSEC/NSEC3 records, enabling zone walking to enumerate subdomains. NSEC openly lists domain names, making enumeration easy. NSEC3 hashes names, making enumeration harder, but attackers can still crack weak...

Astra Linux – Vulnerability in curl

When curl is instructed to use HSTS, the expiration time of a subdomain may overwrite the cache entry of the parent domain, causing it to expire sooner or later than intended. This issue affects curl when using applications that enable HSTS and utilize URLs with the insecure HTTP:// scheme. It al...

EulerOS 2.0 SP11 : curl (EulerOS-SA-2025-1132)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain's cache entry, making it end sooner or later than...

EulerOS 2.0 SP11 : curl (EulerOS-SA-2025-1151)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain's cache entry, making it end sooner or later than...

EulerOS 2.0 SP12 : curl (EulerOS-SA-2025-1170)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain's cache entry, making it end sooner or later than...

CVE-2024-5528

An issue was discovered in GitLab CE/EE affecting all versions prior to 16.11.6, starting from 17.0 prior to 17.0.4, and starting from 17.1 prior to 17.1.2, which allows a subdomain takeover in GitLab Pages...

BIT-GITLAB-2024-5528 Incomplete Comparison with Missing Factors in GitLab

An issue was discovered in GitLab CE/EE affecting all versions prior to 16.11.6, starting from 17.0 prior to 17.0.4, and starting from 17.1 prior to 17.1.2, which allows a subdomain takeover in GitLab Pages...