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Vulnerabilities

Vulnerability · CVE-2026-68968

Apache Airflow's Backfill API authorized a request against a Dag id supplied by the caller whenever the path segment failed to parse.

Published Aug 12, 2026 · catalog updated Oct 24, 2026 · Apache Airflow's Backfill API

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-68968. EPSS is 0.42%. Act only if a listed version of Apache Airflow's Backfill API is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Apache Airflow's Backfill API).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.42%
Remediation
Version ranges on file
Affected products
cpe apache/airflow

Apache Airflow's Backfill API authorized a request against a Dag id supplied by the caller whenever the path segment failed to parse. The authorization dependency parsed it with while the route handler parsed it as pydantic's , which accepts values rejects ( coerces to ); FastAPI resolves dependencies before endpoint validation, so the two acted on different Dags. An authenticated user holding edit permission on any single Dag could therefore read, pause and cancel backfills belonging to any other Dag, including moving another Dag's queued runs to . No non-default configuration is required and backfill ids are sequential, so finding a target is trivial. Users are advised to upgrade to apache-airflow 3.3.1 or later, which parses the backfill id with the same type the routes declare.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/airflow< 3.3.1

How to fix CVE-2026-68968

  • Upgrade

    CVE-2026-68968 lists a fix boundary at 3.3.1. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 3.3.1

  • Advisory

    Open the inventory_high record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-68968. EPSS is 0.42%. Act only if a listed version of Apache Airflow's Backfill API is installed.

Which versions are affected?

Compare what you have installed with < 3.3.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-436. EPSS 0.42%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Apache Airflow security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 12, 2026 · Monitored products — high

    Detected

    Apache Airflow's Backfill API authorized a request against a Dag id supplied by the caller whenever the path segment failed to parse. The authorization dependency parsed it with while the route handler parsed it as pydantic's , which accepts values rejects ( coerces to ); FastAPI resolves dependencies before endpoint validation, so the two acted on different Dags. An authenticated user holding edi

  2. Oct 24, 2026 · Monitored products — high

    Updated

    Apache Airflow's Backfill API authorized a request against a Dag id supplied by the caller whenever the path segment failed to parse. The authorization dependency parsed it with while the route handler parsed it as pydantic's , which accepts values rejects ( coerces to ); FastAPI resolves dependencies before endpoint validation, so the two acted on different Dags. An authenticated user holding edi

Sources

  • Monitored products — highVendor advisoryCVE-2026-68968

    Apache Airflow's Backfill API authorized a request against a Dag id supplied by the caller whenever the path segment failed to parse. The authorization dependency parsed it with while the route handler parsed it as pydantic's , which accepts values rejects ( coerces to ); FastAPI resolves dependencies before endpoint validation, so the two acted on different Dags. An authenticated user holding edi

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • Monitored products — highNov 2, 2026