VulnSocial

CVE-2026-23743Disclosure(discourse / discourse)

LOWCVSS 7.5 · HIGH

Signal is active with 1 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. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, permalinks pointing to access-restricted resources (private topics, categories, posts, or hidden tags) were redirecting users to URLs containing the resource slug, even when the user didn't have access to view the resource. This leaked potentially sensitive information (e.g., private topic titles) via the redirect Location header and the 404 page's search box. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds are available.

discourse CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-200

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

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 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 1 mentions (2026-01-28); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
discourse
Products
discourse

2 versions affected across 1 product

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-01-28: 1Mentions · 2026-01-29: 1Technical Details · 2026-01-29: 101-2801-29
Signal classification1 categories
Disclosure
2100.0%
Referenced assets3 URLs
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-23743 Information Disclosure in Discourse Permalinks Affecting ... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-23743 Don't wait vulnerability scanning results: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=2

    Post summary

    The post announces CVE‑2026‑23743 as an information‑disclosure flaw in Discourse permalinks, links to Vulmon details, but offers no PoC, exploit, or patch info.

    0000071
    4.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-23743 Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, permalinks pointing to access-restricted resources (p… https://www.cve.org/CVERecord?id=CVE-2026-23743

    Post summary

    The text announces the CVE-2026-23743 vulnerability in Discourse, specifying affected versions, but provides no further details.

    00000164
    56.5K followersView on X
CPE platform detail3 entries

3 of 3 entries

PartVendorProductVersionTarget SWTarget HW
Appdiscoursediscourse---
Appdiscoursediscourse2025.12.0--
Appdiscoursediscourse2026.1.0--

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