Public vulnerability disclosure
CVE-2026-73197
Ipa: freeipa: unauthenticated dos in `/ipa/migration/migration.py` via unbounded request body read
publishedCWE-770
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.
Technical severity7.5 highCVSS 3.1 · CNA: redhat
Published2026-08-20Source updated 2026-11-02
Collected2026-11-022 attributed sources
Fixes and workarounds
Workaround
If the `/ipa/migration` endpoint is not required, it can be disabled by commenting out or removing the `Alias /ipa/migration` and its corresponding `<Directory>` block in the Apache configuration file (e.g., `/etc/httpd/conf.d/ipa.conf`). Alternatively, to limit the size of request bodies processed by the `/ipa/migration` endpoint, add the `LimitRequestBody` directive within the `<Directory "/usr/share/ipa/migration">` block in your Apache configuration, setting a conservative limit such as 1 MiB (1048576 bytes): ```apache <Directory "/usr/share/ipa/migration"> LimitRequestBody 1048576 # ... other directives ... </Directory> ``` After modifying the Apache configuration, the `httpd` service must be reloaded or restarted for the changes to take effect. This may temporarily interrupt service.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Red Hat Enterprise Linux 10 Red Hat ipa
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.13.4-1.el10_2; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 10.0 Extended Update Support Red Hat ipa
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.12.2-15.el10_0.7; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support Red Hat ipa
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.6.8-5.el7_9.25; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat idm:client
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8100020261007071200.143e9e98; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8 Red Hat idm:DL1
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8100020261007070536.823393f5; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat idm:client
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8040020261027121250.f153676a; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat idm:DL1
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8040020261027121355.5b01ab7e; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Red Hat idm:client
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8040020261027121250.f153676a; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Red Hat idm:DL1
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8040020261027121355.5b01ab7e; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat idm:client
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8060020261008134123.c1533a64; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat idm:DL1
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8060020261008133528.ada582f1; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Red Hat idm:client
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8060020261008134123.c1533a64; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Red Hat idm:DL1
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8060020261008133528.ada582f1; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service Red Hat idm:client
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8080020261007080925.e581a9e4; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service Red Hat idm:DL1
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8080020261007071832.b0a6ceea; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat idm:client
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8080020261007080925.e581a9e4; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat idm:DL1
https://access.redhat.com/downloads/content/package-browser/ |
≥ 8080020261007071832.b0a6ceea; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9 Red Hat ipa
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.13.4-1.el9_8; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat ipa
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.10.1-12.el9_2.7; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Red Hat ipa
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.11.0-15.el9_4.9; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 9.6 Extended Update Support Red Hat ipa
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:4.12.2-14.el9_6.8; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Enterprise Linux 6 Red Hat ipa
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: unknown |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.5 high |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/errata/RHSA-2026:70564CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:72279CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:82935CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:83083CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:83084CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:83085CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:83460CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:83461CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:89836CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:93071CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:93452CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-73197CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2474697CNA: redhat · issue-tracking, x_refsource_REDHAT