VulnSocial

CVE-2026-45780Disclosure(discourse / discourse)

LOWCVSS 4.3 · MEDIUM

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. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, EventSerializer could expose invited group names, sample invitees, and attendance statistics to users who could view the topic but were not entitled to view the private event invitee list. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

discourse CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-200

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

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

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 1d ago at 2 mentions (2026-07-10); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
discourse
Products
discourse

1 version affected across 1 product

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-07-10: 2Mentions · 2026-07-15: 1Technical Details · 2026-07-10: 2Technical Details · 2026-07-15: 107-1007-15
Signal classification2 categories
Disclosure
266.7%
General
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-07-102
Disclosure1General1
2026-07-151
Disclosure1
Full discourse3 posts
  • DailyCVE@dailycve
    Disclosure

    🟠 Discourse, Information Disclosure, #CVE-2026-45780 (Medium) -DC-Jul2026-970 https://dailycve.com/discourse-information-disclosure-cve-2026-45780-medium-dc-jul2026-970/

    Post summary

    The post announces a Medium‑severity information‑disclosure vulnerability, CVE‑2026‑45780, affecting Discourse, with further details expected in the linked article.

    0000047
    219 followersView on X
  • Infoflowcloud@infoflowcloud
    General

    🚨*CVE* CVE-2026-45780 Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, EventSerializer could expose invited group names, sample invitee… https://www.cve.org/CVERecord?id=CVE-2026-45780 ----- Traducción: CVE-2026-45780 Dis… http://infoflow.cloud`

    Post summary

    The tweet reports CVE-2026-45780, noting that older Discourse versions allow EventSerializer to expose invited group names, but provides no PoC, exploit, or patch information.

    0000041
    91 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-45780 Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, EventSerializer could expose invited group names, sample invitee… https://www.cve.org/CVERecord?id=CVE-2026-45780

    Post summary

    Disclosure of a CVE affecting Discourse where the EventSerializer can leak the names of invited groups before specific version releases.

    00000664
    57.8K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appdiscoursediscourse---
Appdiscoursediscourse2026.6.0--

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