CVE-2023-27043

The email module of Python through 3.11.3 incorrectly parses e-mail addresses that contain a special character. The wrong portion of an RFC2822 header is identified as the value of the addr-spec. In some applications, an attacker can bypass a protection mechanism in which application access is...

CVE-2023-30606

Discourse is an open source platform for community discussion. In affected versions a user logged as an administrator can call arbitrary methods on the SiteSetting class, notably clearcache! and notifychanged!, which when done on a multisite instance, can affect the entire cluster resulting in a...

Design/Logic Flaw

Discourse is an open source platform for community discussion. In affected versions a user logged as an administrator can call arbitrary methods on the SiteSetting class, notably clearcache! and notifychanged!, which when done on a multisite instance, can affect the entire cluster resulting in a...

Design/Logic Flaw

Discourse is an open source platform for community discussion. This vulnerability is not exploitable on the default install of Discourse. A custom feature must be enabled for it to work at all, and the attacker’s payload must pass the CSP to be executed. However, if an attacker succeeds in...

CVE-2023-30606

CVE-2023-30606 affects Discourse where an administrator can call arbitrary methods on SiteSetting (notably clear_cache! and notify_changed!) in multisite deployments, potentially affecting the entire cluster and causing denial of service. Affected versions are mitigated by upgrading to the latest...

CVE-2023-30606 Multisite denial of service through unsanitized dynamic dispatch to SiteSetting in Discourse

Discourse is an open source platform for community discussion. In affected versions a user logged as an administrator can call arbitrary methods on the SiteSetting class, notably clearcache! and notifychanged!, which when done on a multisite instance, can affect the entire cluster resulting in a...

CVE-2023-30538 Stored Cross-site Scripting via improper sanitization of svg files in Discourse

Discourse is an open source platform for community discussion. Due to the improper sanitization of SVG files, an attacker can execute arbitrary JavaScript on the users’ browsers by uploading a crafted SVG file. This issue is patched in the latest stable and tests-passed versions of Discourse. Use...

CVE-2023-30538

CVE-2023-30538 affects the Discourse open source platform. The issue results from improper sanitization of SVG files, allowing an attacker to execute arbitrary JavaScript in users’ browsers when uploading a crafted SVG. The vulnerability is mitigated in the latest stable and tests-passed Discours...

CVE-2023-29196 HTML injection via topic embedding in Discourse

Discourse is an open source platform for community discussion. This vulnerability is not exploitable on the default install of Discourse. A custom feature must be enabled for it to work at all, and the attacker’s payload must pass the CSP to be executed. However, if an attacker succeeds in...

Design/Logic Flaw

Discourse is an open source platform for community discussion. In affected versions a maliciously crafted request from a Discourse administrator can lead to a long-running request and eventual timeout. This has the greatest potential impact in shared hosting environments where admins are untruste...

CVE-2023-28440

CVE-2023-28440 affects Discourse: an admin-authenticated request can trigger a long-running operation, leading to a denial of service (availability impact) in affected builds. Public records identify the vulnerability as a Denial of Service via the admin theme import route, with mitigation by upg...

CVE-2023-28440 Denial of service via admin theme import route in Discourse

Discourse is an open source platform for community discussion. In affected versions a maliciously crafted request from a Discourse administrator can lead to a long-running request and eventual timeout. This has the greatest potential impact in shared hosting environments where admins are untruste...

Webinar: Tips from MSSPs to MSSPs – Building a Profitable vCISO Practice

In today's fast-paced and ever-changing digital landscape, businesses of all sizes face a myriad of cybersecurity threats. Putting in place the right people, technological tools and services, MSSPs are in a great position to ensure their customers' cyber resilience. The growing need of SMEs and...

CVE-2023-28426

Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: GHSA-xrqq-wqh4-5hg2. Reason: Further investigation showed that this CVE was assigned in error. Notes: See https://github.com/darylldoyle/svg-sanitizer/issues/88 for a technical discussion...

CVE-2023-25172

Discourse is an open-source discussion platform. Prior to version 3.0.1 of the stable branch and version 3.1.0.beta2 of the beta and tests-passed branches, a maliciously crafted URL can be included in a user's full name field to to carry out cross-site scripting attacks on sites with a disabled o...

Cross site scripting

Discourse is an open-source discussion platform. Prior to version 3.0.1 of the stable branch and version 3.1.0.beta2 of the beta and tests-passed branches, a maliciously crafted URL can be included in a user's full name field to to carry out cross-site scripting attacks on sites with a disabled o...

CVE-2023-28111 Discourse vulnerable to SSRF protection bypass possible with IPv4-mapped IPv6 addresses

Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the beta and tests-passed branches, attackers are able to bypass Discourse's server-side request forgery SSRF protection for private IPv4 addresses by using a IPv4-mapped IPv6 address. The issue is patched in the...

CVE-2023-28111 Discourse vulnerable to SSRF protection bypass possible with IPv4-mapped IPv6 addresses

Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the beta and tests-passed branches, attackers are able to bypass Discourse's server-side request forgery SSRF protection for private IPv4 addresses by using a IPv4-mapped IPv6 address. The issue is patched in the...

CVE-2023-28107

CVE-2023-28107 affects Discourse. Prior to Discourse 3.0.2 (stable) and 3.1.0.beta3 (beta/tests-passed), an administrator could trigger repeated backup requests, exhausting DB connections and potentially impacting multisite clusters. Patches are available in 3.0.2 (stable) and 3.1.0.beta3 (beta/t...

CVE-2023-23622

Discourse is an open-source discussion platform. Prior to version 3.0.1 of the stable branch and version 3.1.0.beta2 of the beta and tests-passed branches, the count of topics displayed for a tag is a count of all regular topics regardless of whether the topic is in a read restricted category or...