How many CVEs does discourse have?

discourse has 296 published CVE records since 2019, including 134 in the last two years.

How many discourse CVEs are in CISA KEV?

None of discourse's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

Which discourse products have the most CVEs?

The discourse products with the most published CVEs are discourse, discourse-calendar, calendar, discourse-reactions, discourse_calendar.

What are the most common weakness types in discourse CVEs?

discourse's CVEs most often map to these CWE weakness types: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')), CWE-862 (Missing Authorization), CWE-863 (Incorrect Authorization).

Are there public exploits for discourse vulnerabilities?

Yes — 8 of discourse's CVEs have a known public exploit.

How many critical discourse vulnerabilities are there?

discourse has 10 critical and 57 high-severity CVEs.

What is the average severity of discourse CVEs?

The average CVSS base score across discourse's scored CVEs is 5.8.

RadicalNotion.AI

Log in Start free

Log in

Log in Start free

296 CVEs

discourse Vulnerabilities

Name: discourse vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for discourse.

296

Total CVEs

Published

0

In CISA KEV

Exploited in the wild

8

Public exploits

PoC or exploit code

5.8

Avg CVSS

2019–2026

Overview

discourse has 296 published CVE records since 2019, of which 0 are in CISA's Known Exploited Vulnerabilities catalog and 8 have a known public exploit. The average CVSS base score across scored CVEs is 5.8.

This page aggregates every publicly disclosed vulnerability (CVE) affecting discourse products, with severity breakdowns, the most-affected products, the most common weakness types, and the latest disclosures.

Security scorecard

A quick read on discourse's vulnerability posture, as a share of its 296 published CVEs.

Average CVSS: 5.8
Critical / high: 23%
Actively exploited (KEV): 0%
Public exploit available: 3%
Patch available: 98%

Severity and exploitation

How the CVSS severity of discourse's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical10

High57

Medium200

Low28

1 additional CVE has no CVSS severity score.

In CISA’s Known Exploited Vulnerabilities catalog

0

None of discourse's CVEs are currently listed in CISA's KEV catalog.

Public exploits

8

8 of discourse's CVEs have a known public exploit available.

Most affected products

The discourse products with the most published CVEs. Follow any product to browse its versions and vulnerabilities.

Common weakness types

The CWE weakness categories most often found in discourse CVEs. Follow any weakness for its full explanation.

CNAs that assign these CVEs

The CVE Numbering Authorities that publish discourse CVE records.

Disclosure activity by year

How many discourse CVEs were published each year.

2019

3

2021

19

2022

38

2023

64

2024

38

2025

28

2026

106

Latest discourse CVEs

The most recently disclosed vulnerabilities affecting discourse.

Discourse: Private event sample invitees are serialized to non-invited event viewers
CWE-200
Medium · CVSS 5.3
EPSS 0.4%2026-07-09
Discourse: Stored-XSS in 2FA delete confirmation modal
CWE-79
Critical · CVSS 9.0
EPSS 0.5%2026-07-09
Discourse: Hidden post revisions leak through adjacent visible diffs
CWE-200
Medium · CVSS 5.3
EPSS 0.3%2026-07-09
Discourse: Signup-time primary_group_id assignment grants whisperer access
CWE-269
High · CVSS 8.2
EPSS 0.3%2026-07-09
Discourse: Insufficient SVG sanitization logic
CWE-79
Medium · CVSS 5.4
EPSS 0.3%2026-07-09
Discourse: Topic featured link susceptible to stored XSS
CWE-79
High · CVSS 7.4
EPSS 0.3%2026-07-09
Discourse: Secure uploads exposed by hotlinked image copying
CWE-200
Medium · CVSS 6.3
EPSS 0.5%2026-07-09
Discourse: Hidden tag names leaked via category serializers
CWE-200
Medium · CVSS 6.3
EPSS 0.4%2026-07-09
Discourse: Regular users can route multipart uploads into the admin backup store
CWE-862
Medium · CVSS 6.5
EPSS 0.4%2026-07-09
Discourse: Forged AWS SNS bounce notifications can disable a targeted user's email (missing TopicArn binding)
CWE-345
Medium · CVSS 6.5
EPSS 0.2%2026-07-09
Discourse: Remote code execution via pdf uploads
CWE-78
High · CVSS 8.1
EPSS 0.3%2026-07-09
Discourse: Don't leak restricted tag group names via tag info
CWE-200
Medium · CVSS 5.3
EPSS 0.2%2026-06-12

Track new discourse CVEs as they are disclosed and get AI-written analysis and remediation guidance.

Monitor discourse CVEs

Other vendors

Browse vulnerabilities for other tracked vendors.

Micro Focus304 CVEs Nagios303 CVEs deltaww303 CVEs sourceware297 CVEs Open-Xchange293 CVEs Eclipse Foundation290 CVEs Progress289 CVEs PDF-XChange289 CVEs

Browse all vendors

Frequently asked questions

Common questions about discourse vulnerabilities.

How many CVEs does discourse have?: discourse has 296 published CVE records since 2019, including 134 in the last two years.
How many discourse CVEs are in CISA KEV?: None of discourse's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.
Which discourse products have the most CVEs?: The discourse products with the most published CVEs are discourse, discourse-calendar, calendar, discourse-reactions, discourse_calendar.
What are the most common weakness types in discourse CVEs?: discourse's CVEs most often map to these CWE weakness types: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')), CWE-862 (Missing Authorization), CWE-863 (Incorrect Authorization).
Are there public exploits for discourse vulnerabilities?: Yes — 8 of discourse's CVEs have a known public exploit.
How many critical discourse vulnerabilities are there?: discourse has 10 critical and 57 high-severity CVEs.
What is the average severity of discourse CVEs?: The average CVSS base score across discourse's scored CVEs is 5.8.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

Track discourse vulnerabilities

Monitor new discourse vulnerabilities as they are disclosed, with AI-written analysis and remediation guidance.

Start free See pricing