Vulnerability · Published Oct 16, 2026 · Assigned by VulnCheck

CVE-2026-111662Chaskiq through 2.0.3 Unauthenticated SSRF via /oembed Endpoint

Medium 5.8

In plain English

A medium-severity server-side request forgery in chaskiq from chaskiq. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).

Severity (CVSS 3.1)5.8Medium

Exploit odds (30 days)0.4%top 66.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Chaskiq through 2.0.3 contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the server fetch arbitrary URLs via the url parameter of the /oembed endpoint. Attackers can target loopback, private, or cloud-metadata addresses through FetchLinkCardService, which follows redirects and skips TLS verification, to read internal page titles and descriptions.

Affected products (as reported)

Vendor	Product	Versions
chaskiq	chaskiq	0 – through 2.0.3

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

References

https://hackmd.io/@hieuPenguinnn/chaskiq-unauthenticated-ssrf-oembed-url-upload third-party-advisory
https://github.com/chaskiq/chaskiq/blob/2.0.3/app/controllers/oembed_controller.rb#L8-L11 technical-description
https://github.com/chaskiq/chaskiq/blob/2.0.3/app/services/fetch_link_card_service.rb#L11-L40 technical-description
VulnCheck Advisory: Chaskiq through 2.0.3 Unauthenticated SSRF via /oembed Endpoint third-party-advisory