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CVE-2026-55230

CVE-2026-55230

validatedZero produced an exploit or a check.

GHSA-97xr-82vc-wj2v ↗EUVD-2026-91038 ↗

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).−112dkevAttacks confirmed in the real world.
givanz Vvveb <= 1.0.8.5
fixed in 1.0.8.6
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
ETK-2026-276, permanent identifier
pkg:composer/givanz/vvveb
cvss8.7cna vendorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
+3h04mTTV
1h 04mAI analysisAnalysis: how long the AI spent reversing this signal.
Check if you are vulnerable
timeline
0 = trigger signal
public poc−3.7motrigger signal (cve.org) +0mocheck available+0.0moagent stopped
−3mo
−2mo
−1mo

description

Vvveb versions earlier than 1.0.8.6 can retain unsafe event attributes in user-authored post or product content. A low-privileged author or contributor may cause browser-side code to run for people who view the content, including administrators; this requires the attacker to be able to create or edit content and a victim to view it.

mitigation

Upgrade Vvveb to version 1.0.8.6. Until upgraded, restrict untrusted users from creating or editing content and review existing posts and product content created by low-privileged accounts.

fixed in 1.0.8.6

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.
deterministic
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
yes, low privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
0.32%23rd percentile
agent run time
1h 04m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-01 18:42Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
−112d
Δ to kevAttacks confirmed in the real world.
–

outcome

Check only, differential: the check fires on the vulnerable build and is silent on the patched one.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

  1. 2026-06-11 14:16Z
  2. 2026-10-01 18:42Z
    cve_org: trigger signal, started the run
    https://www.cve.org/CVERecord?id=CVE-2026-55230

this entry in the feed

GET /api/v1/feed/CVE-2026-55230

{
  "etk_id": "ETK-2026-276",
  "cve_id": "CVE-2026-55230",
  "display_id": "CVE-2026-55230",
  "ghsa_id": "GHSA-97xr-82vc-wj2v",
  "euvd_id": "EUVD-2026-91038",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Stored cross-site scripting in Vvveb HTML sanitization",
  "summary": "Vvveb versions earlier than 1.0.8.6 can retain unsafe event attributes in user-authored post or product content. A low-privileged author or contributor may cause browser-side code to run for people who view the content, including administrators; this requires the attacker to be able to create or edit content and a victim to view it.",
  "mitigation": "Upgrade Vvveb to version 1.0.8.6. Until upgraded, restrict untrusted users from creating or editing content and review existing posts and product content created by low-privileged accounts.",
  "vendor": "givanz",
  "product": "Vvveb",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 1.0.8.5"
      ],
      "ecosystem": "composer",
      "fixed_versions": [
        "1.0.8.6"
      ],
      "package_name": "givanz/vvveb",
      "purl": "pkg:composer/givanz/vvveb"
    }
  ],
  "cwes": [
    79
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
  "epss_score": 0.0032,
  "epss_percentile": 0.239,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 63.75452008333333,
  "t0_at": "2026-10-01T18:42:50.082000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-01T21:47:19.411295+00:00",
      "days": 0.12811723721064816,
      "is_lower_bound": false,
      "measured_at": "2026-10-01T18:42:50.082000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-06-11T14:16:53+00:00",
      "days": -112.18468844907407,
      "is_lower_bound": false,
      "measured_at": "2026-10-01T18:42:50.082000+00:00",
      "url": "https://github.com/givanz/Vvveb/security/advisories/GHSA-97xr-82vc-wj2v"
    },
    "trigger_signal": {
      "at": "2026-10-01T18:42:50.082000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-01T18:42:50.082000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-55230"
    }
  }
}

published 2026-10-01 20:43Z
last change 2026-10-21 04:45Z

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