CVE-2026-40853

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

GHSA-6rfp-fjvf-86m8 ↗EUVD-2026-123472 ↗

no check availablenot proven exploitable
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.
Apache Software Foundation Apache XML Graphics Batik <= 1.19.0
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
ETK-2026-4175Zero's internal tracking ID, independent of the CVE number., permanent identifier
2h 29msince last run
9mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = cve.org publication
trigger signal (cve.org) +0hwaiting for further signals+0h21m
+2h
+4h
+6h
+8h
+10h
+12h

description

Apache Batik through version 1.19 can emit unencoded SVGFont metadata, creating a cross-site scripting risk. An attacker who can supply font metadata to an affected processing workflow may cause script-capable content to reach users of the generated output.

mitigation

Upgrade Apache Batik to version 1.20. Until upgraded, do not process untrusted SVGFont inputs and prevent untrusted generated SVG content from being served in script-executing browser contexts.

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.
–
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
–
agent run time
9m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-11-11 13:16Z
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, 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. 2026-11-11 13:16Z
    cve_org: trigger signal, started the run

this entry in the feed

GET /api/v1/feed/CVE-2026-40853

{
  "etk_id": "ETK-2026-4175",
  "cve_id": "CVE-2026-40853",
  "display_id": "CVE-2026-40853",
  "ghsa_id": "GHSA-6rfp-fjvf-86m8",
  "euvd_id": "EUVD-2026-123472",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Cross-site scripting in Apache Batik SVGFont metadata",
  "summary": "Apache Batik through version 1.19 can emit unencoded SVGFont metadata, creating a cross-site scripting risk. An attacker who can supply font metadata to an affected processing workflow may cause script-capable content to reach users of the generated output.",
  "mitigation": "Upgrade Apache Batik to version 1.20. Until upgraded, do not process untrusted SVGFont inputs and prevent untrusted generated SVG content from being served in script-executing browser contexts.",
  "vendor": "Apache Software Foundation",
  "product": "Apache XML Graphics Batik",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 1.19.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "org.apache.xmlgraphics:batik-svggen",
      "purl": null
    }
  ],
  "cwes": [
    79
  ],
  "cvss_score": null,
  "cvss_src": null,
  "cvss_vector": null,
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 9.32302635,
  "t0_at": "2026-11-11T13:16:13.608000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-11T13:16:13.608000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-11T13:16:13.608000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-40853"
    }
  }
}

published 2026-11-11 13:27Z
last change 2026-11-11 15:43Z

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