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ETK-2026-3204Zero's internal tracking ID, independent of the CVE number.

ETK-2026-3204Zero's internal tracking ID, independent of the CVE number.

validatedZero produced an exploit or a check.

GHSA-v59p-pxfc-8xvf ↗

check availableZero validated a working check for it.not proven exploitableZero has a detection check, but hasn't produced a full working exploit yet.
awaiting cvepublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
rust:zip <= 9.0.4
fixed in 9.0.5
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
ETK-2026-3204Zero's internal tracking ID, independent of the CVE number., no cve assigned
pkg:cargo/zip
cvss7.5cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
−5h03mTTV
19mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = cve.org, not yet published
trigger signal −10h12mcheck available−5h03magent stopped
−10h
−8h
−6h
−4h
−2h
0

description

Rust zip versions through 9.0.3 use a non-constant-time comparison during AES-encrypted ZIP password verification. An attacker able to submit or influence decryption attempts and measure their timing may infer password-verification information, reducing the effort needed to attack protected entries.

mitigation

Upgrade the Rust zip package to version 9.0.5 or later. Restrict untrusted archive-decryption requests where practical until the update is deployed.

fixed in 9.0.5

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.
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
19m
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).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual check: a technique exists and was validated, 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. 2026-10-31 19:07Z

this entry in the feed

GET /api/v1/feed/ETK-2026-3204

{
  "etk_id": "ETK-2026-3204",
  "cve_id": null,
  "display_id": "ETK-2026-3204",
  "ghsa_id": "GHSA-v59p-pxfc-8xvf",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Timing side channel in Rust zip AES password verification",
  "summary": "Rust zip versions through 9.0.3 use a non-constant-time comparison during AES-encrypted ZIP password verification. An attacker able to submit or influence decryption attempts and measure their timing may infer password-verification information, reducing the effort needed to attack protected entries.",
  "mitigation": "Upgrade the Rust zip package to version 9.0.5 or later. Restrict untrusted archive-decryption requests where practical until the update is deployed.",
  "vendor": "rust",
  "product": "rust:zip",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 9.0.4"
      ],
      "ecosystem": "rust",
      "fixed_versions": [
        "9.0.5"
      ],
      "package_name": "zip",
      "purl": "pkg:cargo/zip"
    }
  ],
  "cwes": [
    200
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 18.8295175,
  "t0_at": null,
  "signals": {
    "check": {
      "at": "2026-11-01T00:15:49.680570+00:00",
      "days": -0.21038454578703703,
      "is_lower_bound": true,
      "measured_at": "2026-11-01T05:18:46.954017+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-31T19:07:15+00:00",
      "days": -0.42467483016203705,
      "is_lower_bound": true,
      "measured_at": "2026-11-01T05:18:46.954017+00:00",
      "url": "https://github.com/zip-rs/zip2/security/advisories/GHSA-v59p-pxfc-8xvf"
    }
  }
}

published 2026-10-31 23:56Z
last change 2026-11-01 05:10Z

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