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CVE-2026-73197: Allocation of Resources Without Limits or Throttling in Red Hat Red Hat Enterprise Linux 10

0
High
VulnerabilityCVE-2026-73197cvecve-2026-73197
Published: 08/20/2026 (08/20/2026, 10:31:31 UTC)
Source: CVE Database V5
Vendor/Project: Red Hat
Product: Red Hat Enterprise Linux 10

Description

A flaw was found in FreeIPA. A remote, unauthenticated attacker can exploit this vulnerability by sending oversized form POST requests to the `/ipa/migration/migration.py` endpoint. This can force the migration handler to read attacker-controlled request bodies fully into memory, leading to increased memory usage, slower request handling, and potential service disruption or denial of service.

CVSS v3.1

Score 7.5high

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/20/2026, 11:14:11 UTC

Technical Analysis

This vulnerability involves allocation of resources without limits or throttling in the FreeIPA component of Red Hat Enterprise Linux 10. An attacker can exploit it by sending oversized form POST requests to the /ipa/migration/migration.py endpoint, forcing the server to consume excessive memory and degrade service availability. The issue results in a denial of service condition due to resource exhaustion. The vulnerability is unauthenticated and remotely exploitable over the network. Red Hat has published an advisory describing mitigation steps but has not confirmed an official patch or fix at this time.

Potential Impact

The impact is a denial of service caused by excessive memory consumption and slower request processing when the vulnerable endpoint processes large request bodies. There is no confidentiality or integrity impact reported. The vulnerability can disrupt service availability for users relying on the FreeIPA migration functionality.

Mitigation Recommendations

Red Hat's advisory recommends disabling the /ipa/migration endpoint if it is not required by removing or commenting out the Alias and Directory configuration blocks in the Apache configuration file (e.g., /etc/httpd/conf.d/ipa.conf). Alternatively, administrators can limit the size of request bodies processed by this endpoint by adding the LimitRequestBody directive within the relevant Apache Directory block, setting a conservative limit such as 1 MiB (1048576 bytes). After configuration changes, the httpd service must be reloaded or restarted. No official patch or fix is currently confirmed; patch status is not yet confirmed — check the vendor advisory for current remediation guidance.

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Technical Details

Data Version
5.2
Assigner Short Name
redhat
Date Reserved
2026-08-11T12:49:53.471Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null
Vendor Advisory Urls
[{"url":"https://access.redhat.com/security/cve/CVE-2026-73197","vendor":"Red Hat"}]

Threat ID: 6a86e0f3acd9273b498384bd

Added to database: 08/20/2026, 11:11:47 UTC

Last enriched: 08/20/2026, 11:14:11 UTC

Last updated: 08/21/2026, 01:51:59 UTC

Views: 3

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