https://db.gcve.eu/sightings/feed 2026-05-02T07:00:19.781637+00:00 Vulnerability-Lookup info@gcve.eu python-feedgen Contains only the most 10 recent sightings. https://db.gcve.eu/sighting/509d8b23-8388-4923-bae0-2831381525f0/export 2026-05-02T07:00:20.623799+00:00 cedric http://db.gcve.eu/user/cedric {"uuid": "509d8b23-8388-4923-bae0-2831381525f0", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "GHSA-3527-QV2Q-PFVX", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/14988", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2025-46734\n\ud83d\udd25 CVSS Score: 6.4 (cvssV3_1, Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)\n\ud83d\udd39 Description: league/commonmark is a PHP Markdown parser. A cross-site scripting (XSS) vulnerability in the Attributes extension of the league/commonmark library (versions 1.5.0 through 2.6.x) allows remote attackers to insert malicious JavaScript calls into HTML. The league/commonmark library provides configuration options such as `html_input: 'strip'` and `allow_unsafe_links: false` to mitigate cross-site scripting (XSS) attacks by stripping raw HTML and disallowing unsafe links. However, when the Attributes Extension is enabled, it introduces a way for users to inject arbitrary HTML attributes into elements via Markdown syntax using curly braces. Version 2.7.0 contains three changes to prevent this XSS attack vector: All attributes starting with `on` are considered unsafe and blocked by default; support for an explicit allowlist of allowed HTML attributes; and manually-added `href` and `src` attributes now respect the existing `allow_unsafe_links` configuration option. If upgrading is not feasible, please consider disabling the `AttributesExtension` for untrusted users and/or filtering the rendered HTML through a library like HTMLPurifier.\n\ud83d\udccf Published: 2025-05-05T19:52:59.521Z\n\ud83d\udccf Modified: 2025-05-05T19:52:59.521Z\n\ud83d\udd17 References:\n1. https://github.com/thephpleague/commonmark/security/advisories/GHSA-3527-qv2q-pfvx\n2. https://github.com/thephpleague/commonmark/commit/f0d626cf05ad3e99e6db26ebcb9091b6cd1cd89b", "creation_timestamp": "2025-05-05T20:20:16.000000Z"} 2025-05-05T20:20:16+00:00