BIT-discourse-2026-32244: Discourse: Cached outdated summaries can leak removed content
Affects discourseSource GCVE Database
Not known to be exploited · fixed in 2026.4.1 : update discourse when convenient.
Data as of 25 Oct 2026, 19:02 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2026.4.1, 2026.3.1, 2026.1.4
Exploitation evidence
Disclosed: evidence found.
CVE published 20 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Upgrade discourse to 2026.4.1, 2026.3.1 or 2026.1.4.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Bitnamidiscoursepkg:bitnami/discourseOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in Discourse versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0. Users should upgrade to one of these versions to remediate the issue. As a temporary workaround before upgrading, restrict summary generation by tightening the allowed groups on the summarization Personas to limit who can generate summaries.
Description
Discourse versions prior to 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0 have a vulnerability where outdated cached AI-generated summaries can expose removed content to anonymous and unprivileged users who cannot regenerate summaries. This issue has been addressed in the specified fixed versions. A temporary mitigation involves restricting summary generation by tightening allowed groups on summarization Personas.