Vulnerability in org.apache.polaris:polaris-runtime-service (CVE-2026-42809)
Summary
Vulnerability in org.apache.polaris:polaris-runtime-service (CVE-2026-42809). Successful exploitation can lead to full system takeover. Exploitable via location. Mitigation: upgrade to 1.4.1 or later.
Original description
The description as published by the source.
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.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-42809 has been found in org.apache.polaris:polaris-runtime-service.
Attackers can target a specific entry point like location over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 9.9/10.
What to do: upgrade org.apache.polaris:polaris-runtime-service to 1.4.1 or later.
If unsure, ask your IT team or search "org.apache.polaris:polaris-runtime-service CVE-2026-42809" on the vendor's site.
CVE-2026-42809 (org.apache.polaris:polaris-runtime-service) — CWE-20 / CVSS v3 9.9
Attack vector: remote (network-reachable) / no user interaction
Attack surface: location / write.data.path / write.metadata.path
Patched: 1.4.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-20) exists in org.apache.polaris:polaris-runtime-service. Attackers reach the vulnerable code path via location.
Check the vendor advisory for the affected versions of org.apache.polaris:polaris-runtime-service. Attack surface: location / write.data.path / write.metadata.path.
Severity: Critical (CVSS 9.9/10). Successful exploitation can lead to full system takeover.
Update to 1.4.1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで org.apache.polaris:polaris-runtime-service を使っているサービスとバージョンを洗い出す。
-
2Apply patch patch
Upgrade org.apache.polaris:polaris-runtime-service to 1.4.1ステージング環境で 1.4.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory nvd.nist.gov
- advisory lists.apache.org
- advisory github.com
- web openwall.com
- web github.com
- web github.com
- web github.com
- web github.com