CVE-2026-103470

Privilege Escalation via Rule Editing in Internet2 Grouper

Published Sep 30, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

Description

In Internet2 Grouper before 7.5.1 (in some configurations), a user who is allowed to create or edit rules in the User Interface can escalate privileges.

Analysis

Technical impact

Internet2 Grouper versions before 7.5.1 contain a flaw that allows a user with permission to create or edit rules in the web interface to elevate privileges beyond what is intended. This improper privilege check corresponds to CWE-266. An attacker who can use the rule‑editing UI can gain higher rights, potentially accessing or modifying protected data.

Affected Systems

The vulnerability affects Internet2 Grouper distributed as a container, in any configuration that permits rule creation or editing through the user interface, for all releases prior to 7.5.1.

Risk and Exploitability

The CVSS score of 9.3 indicates high severity, and the vulnerability is not listed in CISA’s KEV catalog. EPSS data is unavailable, so the precise likelihood of exploitation is uncertain. The likely attack vector is the web interface, where a user with rule‑creation privileges can exploit the flaw; no additional conditions are stated in the description.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Internet2

Grouper

unaffected

Version	Status	Constraints
`5.8.3`	affected	≤ 5.22.5
`6.0.0`	affected	< 6.4.1
`7.0.0`	affected	< 7.5.1

No data.

Vendor Product Versions

Internet2

Grouper

Version	Status	Scheme	Platform
`[5.8.3,5.22.5]`	affected	semver	—
`[6.0.0,6.4.1)`	affected	semver	—
`[7.0.0,7.5.1)`	affected	semver	—

Remediation

Vendor Solution

Upgrade to fixed container version

Vendor Workaround

Turn off rules in UI for non-admins

OpenCVE Recommended Actions

Upgrade to the fixed container version of Internet2 Grouper
Disable rule creation and editing features for non‑administrative users through the UI
Restrict role‑based access control to ensure only administrators can manage rules

Generated by OpenCVE AI on September 30, 2026 at 19:21 UTC.

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.255% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://docs.grouper.internet2.edu/wiki/spaces/Grouper/pages/240549893/

History

Sep 30, 2026 8:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Sep 30, 2026 7:45 PM Title updated View changes

Type	Values Removed	Values Added
Title		Privilege Escalation via Rule Editing in Internet2 Grouper

Sep 30, 2026 4:00 PM Description updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		In Internet2 Grouper before 7.5.1 (in some configurations), a user who is allowed to create or edit rules in the User Interface can escalate privileges.
First Time appeared		Internet2 Internet2 grouper
Weaknesses		CWE-266
CPEs		cpe:2.3:a:internet2:grouper::::::::
Vendors & Products		Internet2 Internet2 grouper
References		https://docs.grouper.internet2.edu/wiki/spaces/Grouper/pages/240549893/
Metrics		cvssV4_0 `{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/AU:N/R:U/RE:L/U:Red'}`