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high · CVSS 7.5

CVE-2026-73197

Ipa: freeipa: unauthenticated dos in `/ipa/migration/migration.py` via unbounded request body read

Published 20 Aug 2026 · Source updated 4 Nov 2026 · Retrieved 2026-11-04 23:20 UTC

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What happened?

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.

Description supplied by CVE Program. Formatting is simplified; follow the original advisory for full details.

Affected software and versions

Source-provided software and version information
SoftwareVersion informationFixed version
ipaRed Hatunaffected: 0:4.13.4-1.el10_2 to < *See vendor advisory
ipaRed Hatunaffected: 0:4.12.2-15.el10_0.7 to < *See vendor advisory
ipaRed Hatunaffected: 0:4.6.8-5.el7_9.25 to < *See vendor advisory
idm:clientRed Hatunaffected: 8100020261007071200.143e9e98 to < *See vendor advisory
idm:DL1Red Hatunaffected: 8100020261007070536.823393f5 to < *See vendor advisory
idm:clientRed Hatunaffected: 8040020261027121250.f153676a to < *See vendor advisory
idm:DL1Red Hatunaffected: 8040020261027121355.5b01ab7e to < *See vendor advisory
idm:clientRed Hatunaffected: 8040020261027121250.f153676a to < *See vendor advisory
idm:DL1Red Hatunaffected: 8040020261027121355.5b01ab7e to < *See vendor advisory
idm:clientRed Hatunaffected: 8060020261008134123.c1533a64 to < *See vendor advisory
idm:DL1Red Hatunaffected: 8060020261008133528.ada582f1 to < *See vendor advisory
idm:clientRed Hatunaffected: 8060020261008134123.c1533a64 to < *See vendor advisory
idm:DL1Red Hatunaffected: 8060020261008133528.ada582f1 to < *See vendor advisory
idm:clientRed Hatunaffected: 8080020261007080925.e581a9e4 to < *See vendor advisory
idm:DL1Red Hatunaffected: 8080020261007071832.b0a6ceea to < *See vendor advisory
idm:clientRed Hatunaffected: 8080020261007080925.e581a9e4 to < *See vendor advisory
idm:DL1Red Hatunaffected: 8080020261007071832.b0a6ceea to < *See vendor advisory
ipaRed Hatunaffected: 0:4.13.4-1.el9_8 to < *See vendor advisory
ipaRed Hatunaffected: 0:4.10.1-12.el9_2.7 to < *See vendor advisory
ipaRed Hatunaffected: 0:4.11.0-15.el9_4.9 to < *See vendor advisory
ipaRed Hatunaffected: 0:4.12.2-14.el9_6.8 to < *See vendor advisory
ipaRed HatDefault status: unknownSee vendor advisory

Version information comes from the source record and can include unaffected products and exceptions. Distribution packages may contain backported fixes: an older upstream version alone does not prove a server is affected.

Is it being exploited?

This CVE was not listed in the CISA catalogue at our last retrieval. This does not establish that exploitation is absent.

CISA data retrieved 2026-11-06 16:38 UTC. Check CISA ↗

How to respond

  1. Confirm the product, installed package version, and any configuration requirements in the vendor advisory.
  2. Follow the vendor’s remediation or workaround guidance in the references below. Structured fixed-version data is unavailable here; the publisher’s description may include a fix or workaround.
  3. Restart affected services if required, then verify the running version. Known exploitation may warrant investigation as well as patching.

Sources and remediation references

This public advisory does not determine whether a particular server is affected. Records are refreshed as sources change; verify urgent decisions against the original advisory.

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