CVE-2026-111816

waiting for further signals

EUVD-2026-107493 ↗

no check availablenot proven exploitable

cve.orgpublic pockev

Apache Software Foundation Apache Traffic Server >= 8.0.0, <= 8.1.11; >= 9.0.0, <= 9.2.15; >= 10.0.0, <= 10.1.4; 10.2.0

CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

ETK-2026-2350, permanent identifier

cvss9.2cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:N

1h 59msince last run

34mAI analysis

timeline

0 = trigger signal

trigger signal (cve.org) +0hwaiting for further signals+2h08m

+4h

+6h

+8h

+10h

+12h

description

Apache Traffic Server deployments running 8.0.0 through 8.1.11, 9.0.0 through 9.2.15, 10.0.0 through 10.1.4, or 10.2.0 are affected. An attacker who can cause Traffic Server to process a malformed chunked 302 response from an upstream peer may induce inconsistent response parsing, leading to cache poisoning or response desynchronization.

mitigation

Upgrade to Traffic Server 9.2.16, 10.1.5, or 10.2.1, as appropriate for the deployed branch. Migrate affected 8.x deployments to a supported fixed branch, since no 8.x fixed release is listed.

check

exploit

automation

contextual

auth required

EPSS

–

agent run time

34m

cve.org record, t = 0

2026-10-21 18:26Z

Δ to public poc

–

Δ to kev

–

outcome

Contextual: an exploit technique exists, 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.

2026-10-21 18:26Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-111816

this entry in the feed

GET /api/v1/feed/CVE-2026-111816

{
  "etk_id": "ETK-2026-2350",
  "cve_id": "CVE-2026-111816",
  "display_id": "CVE-2026-111816",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-107493",
  "status": "published",
  "anchor_state": "anchored",
  "title": "HTTP response desynchronization in Apache Traffic Server",
  "summary": "Apache Traffic Server deployments running 8.0.0 through 8.1.11, 9.0.0 through 9.2.15, 10.0.0 through 10.1.4, or 10.2.0 are affected. An attacker who can cause Traffic Server to process a malformed chunked 302 response from an upstream peer may induce inconsistent response parsing, leading to cache poisoning or response desynchronization.",
  "mitigation": "Upgrade to Traffic Server 9.2.16, 10.1.5, or 10.2.1, as appropriate for the deployed branch. Migrate affected 8.x deployments to a supported fixed branch, since no 8.x fixed release is listed.",
  "vendor": "Apache Software Foundation",
  "product": "Apache Traffic Server",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 8.0.0, <= 8.1.11",
        ">= 9.0.0, <= 9.2.15",
        ">= 10.0.0, <= 10.1.4",
        "10.2.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Apache Traffic Server",
      "purl": null
    }
  ],
  "cwes": [
    444
  ],
  "cvss_score": 9.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 33.5077448,
  "t0_at": "2026-10-21T18:26:32.566000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-21T18:26:32.566000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T18:26:32.566000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-111816"
    }
  }
}

published 2026-10-21 20:00Z
last change 2026-10-21 20:58Z

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