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CVE-2026-120091

CVE-2026-120091

validatedZero produced an exploit or a check.

GHSA-r7j7-m32j-h8w5 ↗EUVD-2026-115641 ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
Temporal Technologies, Inc. Temporal Server >= 1.31.0, < 1.31.5; >= 1.32.0, < 1.32.2
fixed in 1.31.5, 1.32.2
ETK-2026-3330Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss8.7cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
+4h55mTTV
40mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org publication
trigger signal (cve.org) +0hcheck available+4h55magent stopped
0
+1h
+2h
+3h
+4h

description

Temporal Server Worker Service deployments with the Kubernetes compute provider reachable can execute commands under the Worker Service account. An authenticated caller with read access in a namespace can trigger the affected validation path when authorization allows that operation; the resulting access may extend beyond that namespace because the service holds cluster-wide credentials.

mitigation

Remove k8s from workercontroller.compute_providers.enabled in global and namespace-specific configuration, or leave the setting unset only after upgrading. Upgrade 1.31 deployments to 1.31.3 or later, or use 1.32.0 or later, and do not explicitly enable the Kubernetes provider unless required.

fixed in 1.31.5, 1.32.2

check
available
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
deterministic
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
yes, low privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
40m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-02 21:19Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Check only, differential: the check fires on the vulnerable build and is silent on the patched one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-11-02 21:19Z
    ghsa: trigger signal, started the run
    https://github.com/advisories/GHSA-r7j7-m32j-h8w5
  2. 2026-11-02 21:19Z

this entry in the feed

GET /api/v1/feed/CVE-2026-120091

{
  "etk_id": "ETK-2026-3330",
  "cve_id": "CVE-2026-120091",
  "display_id": "CVE-2026-120091",
  "ghsa_id": "GHSA-r7j7-m32j-h8w5",
  "euvd_id": "EUVD-2026-115641",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Command injection in Temporal Server Kubernetes compute provider",
  "summary": "Temporal Server Worker Service deployments with the Kubernetes compute provider reachable can execute commands under the Worker Service account. An authenticated caller with read access in a namespace can trigger the affected validation path when authorization allows that operation; the resulting access may extend beyond that namespace because the service holds cluster-wide credentials.",
  "mitigation": "Remove `k8s` from `workercontroller.compute_providers.enabled` in global and namespace-specific configuration, or leave the setting unset only after upgrading. Upgrade 1.31 deployments to 1.31.3 or later, or use 1.32.0 or later, and do not explicitly enable the Kubernetes provider unless required.",
  "vendor": "Temporal Technologies, Inc.",
  "product": "Temporal Server",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 1.31.0, < 1.31.5",
        ">= 1.32.0, < 1.32.2"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "1.31.5",
        "1.32.2"
      ],
      "package_name": "go.temporal.io/server",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 39.68446686666667,
  "t0_at": "2026-11-02T21:19:19.927000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-03T02:13:58.338422+00:00",
      "days": 0.20461124331018518,
      "is_lower_bound": false,
      "measured_at": "2026-11-02T21:19:19.927000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-02T21:19:19.927000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-02T21:19:19.927000+00:00",
      "url": "https://github.com/advisories/GHSA-r7j7-m32j-h8w5"
    }
  }
}

published 2026-11-03 00:51Z
last change 2026-11-03 03:55Z

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