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CVE-2026-104016

CVE-2026-104016

validatedZero produced an exploit or a check.

GHSA-c2rq-mcfv-jw29 ↗EUVD-2026-111529 ↗

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.
FasterXML jackson-dataformat-protobuf >= 2.22.0, <= 2.22.3; >= 3.2.0, <= 3.2.3; >= 3.0.0, <= 3.1.7; >= 2.6.0, <= 2.18.11; >= 2.19.0, <= 2.21.7
fixed in 2.22.4, 3.2.4, 3.1.8, 2.18.12, 2.21.8
CWE-190 Integer Overflow or Wraparound
ETK-2026-2815Zero's internal tracking ID, independent of the CVE number., permanent identifier
pkg:maven/com.fasterxml.jackson.dataformat/jackson-dataformat-protobuf
pkg:maven/tools.jackson.dataformat/jackson-dataformat-protobuf
cvss7.5cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
+1h21mTTV
17mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0mcheck available+81magent stopped
0
+30min
+60min
+90min

description

Unfixed jackson-dataformat-protobuf releases can mishandle encoded lengths while parsing protobuf string or byte fields, allowing a remote attacker to trigger memory exhaustion and disrupt the JVM. Exploitation requires the application to parse attacker-controlled protobuf input; no authentication or user action is required beyond access to that input path.

mitigation

Upgrade com.fasterxml.jackson.dataformat:jackson-dataformat-protobuf to 2.18.12, 2.21.8, or 2.22.4, as appropriate for the maintained release line. Upgrade tools.jackson.dataformat:jackson-dataformat-protobuf to 3.1.8 or 3.2.4.

fixed in 2.22.4, 3.2.4, 3.1.8, 2.18.12, 2.21.8

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
17m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-27 23:52Z
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. 2026-10-27 23:52Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-104016

this entry in the feed

GET /api/v1/feed/CVE-2026-104016

{
  "etk_id": "ETK-2026-2815",
  "cve_id": "CVE-2026-104016",
  "display_id": "CVE-2026-104016",
  "ghsa_id": "GHSA-c2rq-mcfv-jw29",
  "euvd_id": "EUVD-2026-111529",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Integer overflow denial of service in jackson-dataformat-protobuf",
  "summary": "Unfixed jackson-dataformat-protobuf releases can mishandle encoded lengths while parsing protobuf string or byte fields, allowing a remote attacker to trigger memory exhaustion and disrupt the JVM. Exploitation requires the application to parse attacker-controlled protobuf input; no authentication or user action is required beyond access to that input path.",
  "mitigation": "Upgrade com.fasterxml.jackson.dataformat:jackson-dataformat-protobuf to 2.18.12, 2.21.8, or 2.22.4, as appropriate for the maintained release line. Upgrade tools.jackson.dataformat:jackson-dataformat-protobuf to 3.1.8 or 3.2.4.",
  "vendor": "FasterXML",
  "product": "jackson-dataformat-protobuf",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.22.0, <= 2.22.3"
      ],
      "ecosystem": "maven",
      "fixed_versions": [
        "2.22.4"
      ],
      "package_name": "com.fasterxml.jackson.dataformat:jackson-dataformat-protobuf",
      "purl": "pkg:maven/com.fasterxml.jackson.dataformat/jackson-dataformat-protobuf"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.2.0, <= 3.2.3"
      ],
      "ecosystem": "maven",
      "fixed_versions": [
        "3.2.4"
      ],
      "package_name": "tools.jackson.dataformat:jackson-dataformat-protobuf",
      "purl": "pkg:maven/tools.jackson.dataformat/jackson-dataformat-protobuf"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.0.0, <= 3.1.7"
      ],
      "ecosystem": "maven",
      "fixed_versions": [
        "3.1.8"
      ],
      "package_name": "tools.jackson.dataformat:jackson-dataformat-protobuf",
      "purl": "pkg:maven/tools.jackson.dataformat/jackson-dataformat-protobuf"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.6.0, <= 2.18.11"
      ],
      "ecosystem": "maven",
      "fixed_versions": [
        "2.18.12"
      ],
      "package_name": "com.fasterxml.jackson.dataformat:jackson-dataformat-protobuf",
      "purl": "pkg:maven/com.fasterxml.jackson.dataformat/jackson-dataformat-protobuf"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.19.0, <= 2.21.7"
      ],
      "ecosystem": "maven",
      "fixed_versions": [
        "2.21.8"
      ],
      "package_name": "com.fasterxml.jackson.dataformat:jackson-dataformat-protobuf",
      "purl": "pkg:maven/com.fasterxml.jackson.dataformat/jackson-dataformat-protobuf"
    }
  ],
  "cwes": [
    190
  ],
  "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": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 17.26251375,
  "t0_at": "2026-10-27T23:52:20.141000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-28T01:13:49.630936+00:00",
      "days": 0.0565913187037037,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T23:52:20.141000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-27T23:52:20.141000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T23:52:20.141000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-104016"
    }
  }
}

published 2026-10-28 00:56Z
last change 2026-10-28 04:03Z

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