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CVE-2026-112212

CVE-2026-112212

waiting for further signalsZero needs more public information before it can validate it.
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.
GitLab >= 18.3, < 19.3.6; >= 19.4, < 19.4.3; >= 19.5, < 19.5.1
fixed in 19.3.6, 19.4.3, 19.5.1
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
ETK-2026-2373Zero's internal tracking ID, independent of the CVE number., permanent identifier
cvss7.5cna vendorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L
4msince last run
58mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = trigger signal
trigger signal (cve.org) +0hwaiting for further signals+1h18m
0
+2h
+4h
+6h
+8h
+10h
+12h

description

GitLab CE/EE versions from 18.3 before 19.3.6, 19.4.3, or 19.5.1 are affected. An unauthenticated attacker may be able to alter shared cached OAuth/OIDC discovery information, causing certain flows to contact an externally controlled server. Exploitation depends on conditions that permit attacker-supplied values to influence cached endpoint addresses.

mitigation

Upgrade GitLab to 19.3.6, 19.4.3, or 19.5.1, according to the release line in use. Restrict untrusted access to affected GitLab instances until the update is complete.

fixed in 19.3.6, 19.4.3, 19.5.1

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
58m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-21 23:33Z
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: 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.

  1. 2026-10-21 23:33Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-112212

this entry in the feed

GET /api/v1/feed/CVE-2026-112212

{
  "etk_id": "ETK-2026-2373",
  "cve_id": "CVE-2026-112212",
  "display_id": "CVE-2026-112212",
  "ghsa_id": null,
  "euvd_id": null,
  "status": "published",
  "anchor_state": "anchored",
  "title": "OAuth/OIDC discovery cache poisoning in GitLab CE/EE",
  "summary": "GitLab CE/EE versions from 18.3 before 19.3.6, 19.4.3, or 19.5.1 are affected. An unauthenticated attacker may be able to alter shared cached OAuth/OIDC discovery information, causing certain flows to contact an externally controlled server. Exploitation depends on conditions that permit attacker-supplied values to influence cached endpoint addresses.",
  "mitigation": "Upgrade GitLab to 19.3.6, 19.4.3, or 19.5.1, according to the release line in use. Restrict untrusted access to affected GitLab instances until the update is complete.",
  "vendor": "GitLab",
  "product": "GitLab",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 18.3, < 19.3.6",
        ">= 19.4, < 19.4.3",
        ">= 19.5, < 19.5.1"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "19.3.6",
        "19.4.3",
        "19.5.1"
      ],
      "package_name": "GitLab",
      "purl": null
    }
  ],
  "cwes": [
    444
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:L",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 57.860648133333335,
  "t0_at": "2026-10-21T23:33:45.429000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-21T23:33:45.429000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T23:33:45.429000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-112212"
    }
  }
}

published 2026-10-21 23:54Z
last change 2026-10-22 00:52Z

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