CVE-2025-68934
Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, authenticated users can submit crafted payloads to /drafts.json that cause O(n^2) processing in Base62.decode, tying up workers for 35-60 seconds per request. This affects all users as the shared worker pool becomes exhausted. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. Lowering the max_draft_length site setting reduces attack surface but does not fully mitigate the issue, as payloads under the limit can still trigger the slow code path.
- Affected products
- Discourse
- Discourse
- < 3.5.4, 2025.11.2, 2025.12.0, 2026.1.0
- Fix
- Available
- CVSS 3.1
- 6.5 MEDIUM
- EPSS
- 0.2% (14th percentile)
- Weakness
- CWE-770
- NVD status
- Analyzed
- Published
- 2026-01-28
No indexed exploits for CVE-2025-68934 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2025-68934 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.