CVE-2026-103957

Server-side request forgery in the OAuth2 discovery handling in Loom for AWS

Published Oct 2, 2026 CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed
Description
Server-side request forgery in the OAuth2 discovery handling in Loom for AWS before 1.7.0 might allow an authenticated remote user to obtain the access token of another user of the deployment and to cause the application to issue requests to arbitrary internal network locations, via a crafted discovery document address supplied when registering a tool server or remote agent configured for delegated authentication.



To remediate this issue, users should upgrade to version 1.7.0 or later.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:aws:loom:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Aws
Aws loom
Vendors & Products Aws
Aws loom
Type Values Removed Values Added
Description Server-side request forgery in the OAuth2 discovery handling in Loom for AWS before 1.7.0 might allow an authenticated remote user to obtain the access token of another user of the deployment and to cause the application to issue requests to arbitrary internal network locations, via a crafted discovery document address supplied when registering a tool server or remote agent configured for delegated authentication. To remediate this issue, users should upgrade to version 1.7.0 or later.
Title Server-side request forgery in the OAuth2 discovery handling in Loom for AWS
Weaknesses CWE-201
CWE-918
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
AMZN
Published
Updated
Oct 9, 2026, 4:36 PM
Reserved
Oct 1, 2026, 2:59 PM
Status
Awaiting Analysis
Published
Oct 2, 2026, 7:16 PM
Modified
Oct 6, 2026, 7:17 PM