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CVE-2026-104895

CVE-2026-104895

validatedZero produced an exploit or a check.

GHSA-h3c2-2m49-r49w ↗EUVD-2026-111530 ↗

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-smile >= 2.9.0, <= 2.18.11; >= 2.19.0, <= 2.21.7; >= 2.22.0, <= 2.22.3; >=3.0.0, <= 3.1.7; >=3.2.0, <=3.2.3
fixed in 2.18.12, 2.21.8, 2.22.4, 3.1.8, 3.2.4
CWE-789 Memory Allocation with Excessive Size Value
ETK-2026-2814Zero's internal tracking ID, independent of the CVE number., permanent identifier
pkg:maven/com.fasterxml.jackson.dataformat/jackson-dataformat-smile
pkg:maven/tools.jackson.dataformat/jackson-dataformat-smile
cvss7.5cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
+55mTTV
15mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
trigger signal (cve.org) +0mcheck available+55magent stopped
0
+15min
+30min
+45min
+60min

description

FasterXML jackson-dataformat-smile is affected when an application uses its asynchronous Smile parser on attacker-supplied data. An unauthenticated sender able to submit Smile content for parsing can disrupt service by causing excessive memory use or a parser failure.

mitigation

Upgrade com.fasterxml.jackson.dataformat:jackson-dataformat-smile to 2.18.12, 2.21.8, or 2.22.4, or tools.jackson.dataformat:jackson-dataformat-smile to 3.1.8 or 3.2.4, as applicable. Until upgraded, do not route untrusted Smile data to asynchronous parsing endpoints.

fixed in 2.18.12, 2.21.8, 2.22.4, 3.1.8, 3.2.4

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
15m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-28 00:01Z
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. 2026-10-28 00:01Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-104895

this entry in the feed

GET /api/v1/feed/CVE-2026-104895

{
  "etk_id": "ETK-2026-2814",
  "cve_id": "CVE-2026-104895",
  "display_id": "CVE-2026-104895",
  "ghsa_id": "GHSA-h3c2-2m49-r49w",
  "euvd_id": "EUVD-2026-111530",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Uncontrolled memory allocation in Jackson Smile async parser",
  "summary": "FasterXML jackson-dataformat-smile is affected when an application uses its asynchronous Smile parser on attacker-supplied data. An unauthenticated sender able to submit Smile content for parsing can disrupt service by causing excessive memory use or a parser failure.",
  "mitigation": "Upgrade com.fasterxml.jackson.dataformat:jackson-dataformat-smile to 2.18.12, 2.21.8, or 2.22.4, or tools.jackson.dataformat:jackson-dataformat-smile to 3.1.8 or 3.2.4, as applicable. Until upgraded, do not route untrusted Smile data to asynchronous parsing endpoints.",
  "vendor": "FasterXML",
  "product": "jackson-dataformat-smile",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.9.0, <= 2.18.11"
      ],
      "ecosystem": "maven",
      "fixed_versions": [
        "2.18.12"
      ],
      "package_name": "com.fasterxml.jackson.dataformat:jackson-dataformat-smile",
      "purl": "pkg:maven/com.fasterxml.jackson.dataformat/jackson-dataformat-smile"
    },
    {
      "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-smile",
      "purl": "pkg:maven/com.fasterxml.jackson.dataformat/jackson-dataformat-smile"
    },
    {
      "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-smile",
      "purl": "pkg:maven/com.fasterxml.jackson.dataformat/jackson-dataformat-smile"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">=3.0.0, <= 3.1.7"
      ],
      "ecosystem": "maven",
      "fixed_versions": [
        "3.1.8"
      ],
      "package_name": "tools.jackson.dataformat:jackson-dataformat-smile",
      "purl": "pkg:maven/tools.jackson.dataformat/jackson-dataformat-smile"
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">=3.2.0, <=3.2.3"
      ],
      "ecosystem": "maven",
      "fixed_versions": [
        "3.2.4"
      ],
      "package_name": "tools.jackson.dataformat:jackson-dataformat-smile",
      "purl": "pkg:maven/tools.jackson.dataformat/jackson-dataformat-smile"
    }
  ],
  "cwes": [
    789
  ],
  "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": 14.786699483333333,
  "t0_at": "2026-10-28T00:01:44.496000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-28T00:56:22.019785+00:00",
      "days": 0.03793430306712963,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T00:01:44.496000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-28T00:01:44.496000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-28T00:01:44.496000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-104895"
    }
  }
}

published 2026-10-28 00:41Z
last change 2026-10-28 04:03Z

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