CVE-2021-26918 describes a critical vulnerability in the ProBot Discord bot, where its uploader web service allows double extensions like .html.jpg with a text/html content type, potentially interfering with the "Send an image when a user joins the server" feature or causing other unspecified impacts. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with low complexity, allowing for high impact to confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion, though the vendor disputes the existence of a vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2021-02-08CPE matchmatch criteria | cpe:2.3:a:probot:bot:*:*:*:*:*:discord:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.