CVE-2026-27570Disclosure(discourse / discourse)

LOWCVSS 6.1 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the onebox method in the SharedAiConversation model renders the conversation title directly into HTML without proper sanitization. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, tighten access by changing the `ai_bot_public_sharing_allowed_groups` site setting.

discourse CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

Vendor / third-party advisories

https://github.com/discourse/discourse/security/advisories/GHSA-hfxw-89hw-vwmv

Weakness type (CWE)

CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

discourse

Threat summary

2 mentions across 1 observed day

What's happening

Technical details provided in 2 signals
Disclosure: 2 classified signals
2 total mentions across 1 day

Affected systems

Vendors

discourse

Products

discourse

1 version affected across 1 product

Deep dive

Activity timeline2 mentions / 1d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Infoflowcloud@infoflowcloud202d
Disclosure
🚨*CVE* CVE-2026-27570 Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the onebox method in the SharedAiConversation model rend… https://www.cve.org/CVERecord?id=CVE-2026-27570 ----- Traducción: CVE-2026-27570 Dis… http://infoflow.cloud`
Post summary
The tweet announces CVE-2026-27570 for Discourse, identifies affected versions and a vulnerable method, but provides no PoC, exploit, or patch details.
0000033
61 followersView on X
CVE@CVEnew202d
Disclosure
CVE-2026-27570 Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the onebox method in the SharedAiConversation model rend… https://www.cve.org/CVERecord?id=CVE-2026-27570
Post summary
The text announces CVE-2026-27570, indicating a vulnerability in the onebox method of Discourse’s SharedAiConversation model affecting specific older versions, with details linked to the CVE record.
00000240
56.8K followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	discourse	discourse	-	-	-
App	discourse	discourse	2026.3.0	-	-

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