ETK-2026-3128Zero's internal tracking ID, independent of the CVE number.

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

GHSA-494m-4556-wf5p ↗

no check availablenot proven exploitable
awaiting cvepublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).−3h08mkevAttacks confirmed in the real world.
go:github.com/imgproxy/imgproxy/v3 >= 3.3.0, < 4.0.17
fixed in 4.0.17
ETK-2026-3128Zero's internal tracking ID, independent of the CVE number., no cve assigned
pkg:golang/github.com/imgproxy/imgproxy/v3
2h 50msince last run
19mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org, not yet published
trigger signal −3h08mpublic poc−3h08mwaiting for further signals−2h50m
−2h
−1h
0

description

imgproxy versions before 4.0.17 can write beyond a heap buffer while processing malformed ICO images. An attacker who can cause imgproxy to process a crafted ICO may crash an image-processing worker, causing denial of service.

mitigation

Upgrade github.com/imgproxy/imgproxy/v3 to version 4.0.17 or later. Until upgraded, prevent processing of untrusted ICO files.

fixed in 4.0.17

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
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).
−3h08m
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual, not validated: no deterministic check could cover this one, and no technique passed our review.

source signals

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

  1. 2026-10-30 22:56Z
    ghsa: trigger signal, started the run
  2. 2026-10-30 22:56Z

this entry in the feed

GET /api/v1/feed/ETK-2026-3128

{
  "etk_id": "ETK-2026-3128",
  "cve_id": null,
  "display_id": "ETK-2026-3128",
  "ghsa_id": "GHSA-494m-4556-wf5p",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Out-of-bounds write in imgproxy ICO loader",
  "summary": "imgproxy versions before 4.0.17 can write beyond a heap buffer while processing malformed ICO images. An attacker who can cause imgproxy to process a crafted ICO may crash an image-processing worker, causing denial of service.",
  "mitigation": "Upgrade github.com/imgproxy/imgproxy/v3 to version 4.0.17 or later. Until upgraded, prevent processing of untrusted ICO files.",
  "vendor": "go",
  "product": "go:github.com/imgproxy/imgproxy/v3",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.3.0, < 4.0.17"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        "4.0.17"
      ],
      "package_name": "github.com/imgproxy/imgproxy/v3",
      "purl": "pkg:golang/github.com/imgproxy/imgproxy/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": 19.15089031666667,
  "t0_at": null,
  "signals": {
    "public_poc": {
      "at": "2026-10-30T22:56:14+00:00",
      "days": -0.13069007890046297,
      "is_lower_bound": true,
      "measured_at": "2026-10-31T02:04:25.653468+00:00",
      "url": "https://github.com/advisories/GHSA-494m-4556-wf5p"
    },
    "trigger_signal": {
      "at": "2026-10-30T22:56:14+00:00",
      "days": -0.13069007890046297,
      "is_lower_bound": true,
      "measured_at": "2026-10-31T02:04:25.653468+00:00",
      "url": "https://github.com/advisories/GHSA-494m-4556-wf5p"
    }
  }
}

published 2026-10-30 23:40Z
last change 2026-10-31 02:00Z

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Every entry here shows what we attempted and when. The technical details, the generated exploit that fired it and the evidence behind the verdict are not public. Tell us about your use case and we’ll get back to you about extended API access.