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CVE-2026-42809
No affected components available
Apache Polaris can issue broad temporary ("vended") storage credentials during staged table creation before the effective table location has been validated or durably reserved. Those temporary credentials are meant to limit the scope of accessible table data and metadata, but this scope limitation becomes attacker- directed because the attacker can choose a reachable target location.
In the confirmed variant, if the caller supplies a custom location during
stage create and requests credential vending, Apache Polaris uses that location to
construct delegated storage credentials immediately. The stage-create path
itself neither runs the normal location validation nor the overlap checks
before those credentials are issued.
Closely related to that, the staged-create flow also accepts
write.data.path / write.metadata.path in the request properties and
feeds
those location overrides into the same effective table location set used for
credential vending. Those fields are secondary to the main custom-location
exploit, but they are still attacker-influenced location inputs that should
be
validated before any credentials are issued.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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