Régis Hanol

8 exploits Active since Jan 2023
CVE-2023-45806 WRITEUP MEDIUM WRITEUP
Discourse <3.1.3, <3.2.0.beta3 - Info Disclosure
Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the "bleeding" by ensuring users only use alphanumeric characters in their full name field.
CVSS 4.3
CVE-2023-45806 WRITEUP MEDIUM WRITEUP
Discourse <3.1.3, <3.2.0.beta3 - Info Disclosure
Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the "bleeding" by ensuring users only use alphanumeric characters in their full name field.
CVSS 4.3
CVE-2024-37299 WRITEUP MEDIUM WRITEUP
Discourse < 3.2.5 - Denial of Service via Long Tag Group Name
Discourse is an open source discussion platform. Prior to 3.2.5 and 3.3.0.beta5, crafting requests to submit very long tag group names can reduce the availability of a Discourse instance. This vulnerability is fixed in 3.2.5 and 3.3.0.beta5.
CVSS 4.9
CVE-2024-39320 WRITEUP MEDIUM WRITEUP
Discourse < 3.2.5 - Unauthenticated iframe Injection via Allowed Iframes Bypass
Discourse is an open source discussion platform. Prior to 3.2.5 and 3.3.0.beta5, the vulnerability allows an attacker to inject iframes from any domain, bypassing the intended restrictions enforced by the allowed_iframes setting. This vulnerability is fixed in 3.2.5 and 3.3.0.beta5.
CVSS 6.1
CVE-2023-22740 WRITEUP MEDIUM WRITEUP
Discourse < 3.0.0 - Denial of Service via Unlimited Chat Draft Length
Discourse is an open source platform for community discussion. Versions prior to 3.1.0.beta1 (beta) (tests-passed) are vulnerable to Allocation of Resources Without Limits. Users can create chat drafts of an unlimited length, which can cause a denial of service by generating an excessive load on the server. Additionally, an unlimited number of drafts were loaded when loading the user. This issue has been patched in version 2.1.0.beta1 (beta) and (tests-passed). Users should upgrade to the latest version where a limit has been introduced. There are no workarounds available.
CVSS 4.3
CVE-2024-37299 WRITEUP MEDIUM WRITEUP
Discourse < 3.2.5 - Denial of Service via Long Tag Group Name
Discourse is an open source discussion platform. Prior to 3.2.5 and 3.3.0.beta5, crafting requests to submit very long tag group names can reduce the availability of a Discourse instance. This vulnerability is fixed in 3.2.5 and 3.3.0.beta5.
CVSS 4.9
CVE-2024-39320 WRITEUP MEDIUM WRITEUP
Discourse < 3.2.5 - Unauthenticated iframe Injection via Allowed Iframes Bypass
Discourse is an open source discussion platform. Prior to 3.2.5 and 3.3.0.beta5, the vulnerability allows an attacker to inject iframes from any domain, bypassing the intended restrictions enforced by the allowed_iframes setting. This vulnerability is fixed in 3.2.5 and 3.3.0.beta5.
CVSS 6.1
CVE-2025-24808 WRITEUP MEDIUM WRITEUP
Discourse < 3.3.4 and < 3.4.0.beta5 - Race Condition in Group DM User Addition
Discourse is an open-source discussion platform. Prior to versions `3.3.4` on the `stable` branch and `3.4.0.beta5` on the `beta` branch, someone who is about to reach the limit of users in a group DM may send requests to add new users in parallel. The requests might all go through ignoring the limit due to a race condition. The patch in versions `3.3.4` and `3.4.0.beta5` uses the `lock` step in service to wrap part of the `add_users_to_channel` service inside a distributed lock/mutex in order to avoid the race condition.
CVSS 4.3