{"id":86203,"date":"2026-01-04T14:09:30","date_gmt":"2026-01-04T14:09:30","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-32948-peertube-server-vulnerability-enabling-denial-of-service-and-blind-ssrf","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-32948-peertube-server-vulnerability-enabling-denial-of-service-and-blind-ssrf\/","title":{"rendered":"CVE-2025-32948: PeerTube Server Vulnerability Enabling Denial of Service and Blind SSRF<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

This report details the critical vulnerability CVE-2025-32948, which affects PeerTube servers. This vulnerability allows attackers to potentially compromise systems or leak data by abusing the Create Activity functionality. The exploitation of this vulnerability can cause the PeerTube server to stop functioning or, in certain cases, send requests to arbitrary URLs, enabling Blind Server Side Request Forgery (SSRF).<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-32948
\nSeverity: High (CVSS: 7.5)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Denial of Service, Blind SSRF leading to potential system compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

PeerTube | All versions prior to patch<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability originates from the misuse of the Create Activity functionality in the PeerTube server. Attackers can craft specific playlists sent to the “inbox” endpoint of PeerTube’s ActivityPub activities. This malformed playlist can cause the server to stop functioning (Denial of Service), or in specific cases, force the server to send requests to arbitrary URLs leading to a Blind SSRF scenario.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Below is a conceptual example of how an HTTP request exploiting this vulnerability might look:<\/p>\n

POST \/inbox HTTP\/1.1\nHost: peertube.example.com\nContent-Type: application\/activity+json\n{\n\"@context\": \"https:\/\/www.w3.org\/ns\/activitystreams\",\n\"type\": \"Create\",\n\"actor\": \"https:\/\/attacker.example.com\/account\",\n\"object\": {\n\"type\": \"Playlist\",\n\"url\": \"http:\/\/arbitrary.example.com\"\n}\n}<\/code><\/pre>\n
In this example, the “url” parameter in the “object” field is misused to point to an arbitrary URL, leveraging the server to perform unintended requests.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This report details the critical vulnerability CVE-2025-32948, which affects PeerTube servers. This vulnerability allows attackers to potentially compromise systems or leak data by abusing the Create Activity functionality. The exploitation of this vulnerability can cause the PeerTube server to stop functioning or, in certain cases, send requests to arbitrary URLs, enabling Blind Server Side […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86203","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t