EUVD-2026-80070
GHSA-3863-8rfp-v9rw
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (vuldb) · only source for this CVE.
CVSS VectorVendor: vuldb
Lifecycle Timeline
2DescriptionCVE.org
A security flaw has been discovered in ag-ui-protocol ag-ui 0.3.0. Affected is the function urllib.request.urlopen of the file integrations/aws-strands/python/src/ag_ui_strands/utils.py of the component Multimodal Content. The manipulation of the argument Value results in server-side request forgery. The attack can be executed remotely. The patch is identified as bf0c34df34cbb4b1992bc37c9bfffe6dd54bb189. It is advisable to implement a patch to correct this issue.
AnalysisAI
Server-side request forgery in the AWS Strands Python integration of ag-ui (ag_ui_strands) 0.3.0 allows a user who can submit a chat message to make the agent backend fetch an arbitrary URL through urllib.request.urlopen, reaching loopback, RFC1918, link-local and cloud metadata addresses from the server's network position. The flaw lives in the multimodal content path, where image, document or video attachments can be supplied as URLs rather than inline data, and the pre-patch code applied no scheme, host or redirect validation. …
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External POC / Exploit Code
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