# CVE-2026-109848: CVE-2026-109848

Status: published. Published: 2026-10-28. Updated: 2026-11-04.

GROWI contains an authorization bypass vulnerability in its tag update API and the page update API due to improper use of a user-controlled key. By exploiting this vulnerability, an attacker who can log in to the product may obtain the contents of pages without the required read permission and save them to pages that the attacker can edit.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- GROWI, Inc. / GROWI: ≥ v4.5.5; ≤ v8.0.6 (affected, semver). Source: CNA: jpcert

## Severity and prioritization

- CVSS 3.0: 4.2 (medium); CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N; source: CNA: jpcert

- CVSS 4.0: 2.3 (low); CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N; source: CNA: jpcert

- CVSS 4.0: 2.3 (low); CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: vultures@jpcert.or.jp

- CVSS 3.0: 4.2 (medium); CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N; source: NVD: vultures@jpcert.or.jp

- CISA KEV: No listing in collected sources

- EPSS: 0.22% as of 2026-11-04; percentile 12.94%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-639

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/growilabs/growi/security/advisories/GHSA-pqx5-gx68-83h4 (CNA: jpcert)

- https://growi.co.jp/news/48/ (CNA: jpcert)

- https://jvn.jp/en/jp/JVN51223238/ (CNA: jpcert)

- https://github.com/growilabs/growi/security/advisories/GHSA-pqx5-gx68-83h4 (vultures@jpcert.or.jp)

- https://growi.co.jp/news/48/ (vultures@jpcert.or.jp)

- https://jvn.jp/en/jp/JVN51223238/ (vultures@jpcert.or.jp)

## Provenance

- CNA: jpcert: https://www.cve.org/CVERecord?id=CVE-2026-109848; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-109848; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-109848; retrieved 2026-11-04; source updated Not reported

Revision: 3d93edba429e1bbb593de67075e6190483b0baaf21527bf1d1d876ab744f16f6

Canonical: https://y2.dev/cve/CVE-2026-109848

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.