CVE-2026-111663
Chaskiq through 2.0.3 contains a server-side request forgery vulnerability that allows unauthenticated attackers to fetch arbitrary URLs via the createUrlUpload GraphQL mutation.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Chaskiq through 2.0.3 contains a server-side request forgery vulnerability that allows unauthenticated attackers to fetch arbitrary URLs via the createUrlUpload GraphQL mutation. Attackers can submit internal URLs, including cloud instance metadata endpoints, through POST /graphql and retrieve the full response via the returned ActiveStorage blob URL.
- CVSS 4.0
- 9.2 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.37% probability · 31th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Source
- disclosure@vulncheck.com
EPSS moved from 0.3% on 17 October 2026 to 0.4% on 26 October 2026.
References
- https://github.com/chaskiq/chaskiq/blob/2.0.3/app/controllers/graphql_controller.rb#L3-L33
- https://github.com/chaskiq/chaskiq/blob/2.0.3/app/graphql/mutations/create_url_upload.rb#L29-L66
- https://hackmd.io/@hieuPenguinnn/chaskiq-unauthenticated-ssrf-oembed-url-upload
- https://www.vulncheck.com/advisories/chaskiq-through-2.0.3-ssrf-via-createurlupload-graphql-mutation
- https://hackmd.io/@hieuPenguinnn/chaskiq-unauthenticated-ssrf-oembed-url-upload
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.