CVE-2026-72720

Published: Ago 10, 2026 Last Modified: Ago 10, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,4
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: low
Integrity: low
Availability: none

Description

AI Translation Available

Discourse is an open-source discussion platform. Prior to 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1, Discourse has HTML injection in PrettyText.format_for_email because cooked attribute values are reparsed as markup. Crafted Vimeo iframe sources, secure-upload URLs or dimensions, and hashtag data-slug values can cause decoded attribute text to be reinterpreted as HTML. The vulnerable conversion also fails to strictly validate the Vimeo iframe host and path, allowing non-Vimeo allowlisted iframes to be converted. This issue is fixed in versions 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0030
Percentile
0,2th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Confidentiality Integrity Availability
Potential Impacts:
Bypass Protection Mechanism Read Application Data Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: AI/ML, Web Based, Web Server
Likelihood of Exploit: High
View CWE Details
https://github.com/discourse/discourse/commit/234ee88a5b9b5…
https://github.com/discourse/discourse/commit/234ee88a5b9b53bf938c53351eab20130…
https://github.com/discourse/discourse/commit/4b639a52f47fb…
https://github.com/discourse/discourse/commit/4b639a52f47fb3d46093bece9df147e4e…
https://github.com/discourse/discourse/commit/a5d3b112d5982…
https://github.com/discourse/discourse/commit/a5d3b112d598242c1d1803d5a77bf98d5…
https://github.com/discourse/discourse/commit/b25a074b16525…
https://github.com/discourse/discourse/commit/b25a074b165253e01fc4c8911b980fc68…
https://github.com/discourse/discourse/pull/42244
https://github.com/discourse/discourse/pull/42244
https://github.com/discourse/discourse/pull/42245
https://github.com/discourse/discourse/pull/42245
https://github.com/discourse/discourse/pull/42246
https://github.com/discourse/discourse/pull/42246
https://github.com/discourse/discourse/pull/42247
https://github.com/discourse/discourse/pull/42247
https://github.com/discourse/discourse/security/advisories/…
https://github.com/discourse/discourse/security/advisories/GHSA-3q6f-6gm9-m35v