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ETK-2026-1848Zero's internal tracking ID, independent of the CVE number.

ETK-2026-1848Zero's internal tracking ID, independent of the CVE number.

waiting for further signalsZero needs more public information before it can validate it.

GHSA-mgcc-cww5-fp2q ↗

no check availablenot proven exploitable
awaiting cvepublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).−6.3dkevAttacks confirmed in the real world.
go:github.com/go-jose/go-jose/v4 <= 4.1.5; <= 3.0.5
fixed in 4.1.6
ETK-2026-1848Zero's internal tracking ID, independent of the CVE number., no cve assigned
pkg:golang/github.com/go-jose/go-jose/v4
pkg:golang/github.com/go-jose/go-jose/v3
cvss7.5cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3d 01h 43msince last run
13mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org, not yet published
trigger signal −6.3dpublic poc−6.3dwaiting for further signals−3.1d
−6d
−4d
−2d
0

description

go-jose can spend excessive CPU time while parsing an untrusted JWK containing specially formed RSA key parameters. An attacker able to supply JWK input to an affected application may cause denial of service, particularly on Go 1.24 or later.

mitigation

Upgrade github.com/go-jose/go-jose/v4 to version 4.1.6 or later. For v3, move to the fixed v4 release where possible and avoid accepting JWKs from untrusted sources until migration is complete.

fixed in 4.1.6

check
no
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.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
no
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
13m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
not published yet
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
−6.3d
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual: an exploit technique exists, but no deterministic check could cover this one.

source signals

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

  1. 2026-10-14 23:13Z
  2. 2026-10-14 23:13Z

this entry in the feed

GET /api/v1/feed/ETK-2026-1848

{
  "etk_id": "ETK-2026-1848",
  "cve_id": null,
  "display_id": "ETK-2026-1848",
  "ghsa_id": "GHSA-mgcc-cww5-fp2q",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Excessive CPU consumption in go-jose JWK parsing",
  "summary": "go-jose can spend excessive CPU time while parsing an untrusted JWK containing specially formed RSA key parameters. An attacker able to supply JWK input to an affected application may cause denial of service, particularly on Go 1.24 or later.",
  "mitigation": "Upgrade github.com/go-jose/go-jose/v4 to version 4.1.6 or later. For v3, move to the fixed v4 release where possible and avoid accepting JWKs from untrusted sources until migration is complete.",
  "vendor": "go",
  "product": "go:github.com/go-jose/go-jose/v4",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 4.1.5"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        "4.1.6"
      ],
      "package_name": "github.com/go-jose/go-jose/v4",
      "purl": "pkg:golang/github.com/go-jose/go-jose/v4"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 3.0.5"
      ],
      "ecosystem": "go",
      "fixed_versions": [],
      "package_name": "github.com/go-jose/go-jose/v3",
      "purl": "pkg:golang/github.com/go-jose/go-jose/v3"
    }
  ],
  "cwes": null,
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 13.087187983333333,
  "t0_at": null,
  "signals": {
    "public_poc": {
      "at": "2026-10-14T23:13:08+00:00",
      "days": -6.273951227372685,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T05:47:37.407634+00:00",
      "url": "https://github.com/go-jose/go-jose/security/advisories/GHSA-mgcc-cww5-fp2q"
    },
    "trigger_signal": {
      "at": "2026-10-14T23:13:08+00:00",
      "days": -6.273951227372685,
      "is_lower_bound": true,
      "measured_at": "2026-10-21T05:47:37.407634+00:00",
      "url": "https://github.com/go-jose/go-jose/security/advisories/GHSA-mgcc-cww5-fp2q"
    }
  }
}

published 2026-10-17 04:31Z
last change 2026-10-21 05:31Z

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