CVE-2023-49098 — Discourse-reactions is a plugin that allows user to add their reactions to the p

Discourse-reactions is a plugin that allows user to add their reactions to the post. Data about a user's reaction notifications could be exposed. This vulnerability was patched in commit 2c26939.

01What is this vulnerability?

Discourse-reactions is a plugin that allows user to add their reactions to the post. Data about a user's reaction notifications could be exposed. This vulnerability was patched in commit 2c26939.

02Affected products

Vendor	Product	Versions
discourse	discourse	reactions — < commit 2c26939

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-01-12T20:37:26.516Z
• Last modified: 2025-06-03T14:04:02.387Z

09References

• github.com — https://github.com/discourse/discourse-reactions/security/advisories/GHSA-mq82-7…
• github.com — https://github.com/discourse/discourse-reactions/commit/2c26939395177730e492640d…