{"id":"UBUNTU-CVE-2025-70129","details":"If the anti spam-captcha functionality in PluXml versions 5.8.22 and earlier is enabled, a captcha challenge is generated with a format that can be automatically recognized for articles, such that an automated script is able to solve this anti-spam mechanism trivially and publish spam comments. The details of captcha challenge are exposed within document body of articles with comments & anti spam-captcha functionalities enabled, including \"capcha-letter\", \"capcha-word\" and \"capcha-token\" which can be used to construct a valid post request to publish a comment. As such, attackers can flood articles with automated spam comments, especially if there are no other web defenses available.","modified":"2026-03-19T08:26:17.996140Z","published":"2026-03-10T20:16:00Z","upstream":["CVE-2025-70129"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-70129"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-70129"}],"affected":[{"package":{"name":"pluxml","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/pluxml@5.4-1ubuntu1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4-1","5.4-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"pluxml","binary_version":"5.4-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-70129.json"}},{"package":{"name":"pluxml","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/pluxml@5.5-2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.5-2"],"ecosystem_specific":{"binaries":[{"binary_version":"5.5-2","binary_name":"pluxml"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-70129.json"}},{"package":{"name":"pluxml","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pluxml@5.6-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.6-1"],"ecosystem_specific":{"binaries":[{"binary_name":"pluxml","binary_version":"5.6-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-70129.json"}},{"package":{"name":"pluxml","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/pluxml@5.6-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.6-1"],"ecosystem_specific":{"binaries":[{"binary_name":"pluxml","binary_version":"5.6-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-70129.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}