# CVE-2026-117565: Artalk before 2.10.1 Unauthenticated SSRF via Comment Page Title Fetch

Status: published. Published: 2026-10-27. Updated: 2026-11-05.

Artalk before 2.10.1 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to make the server fetch arbitrary URLs by submitting anonymous comments to /api/v2/comments. Attackers can set a page_key to an internal URL, which GetTitleByURL fetches after only scheme validation, then read the page title through the public comment list.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/ArtalkJS/Artalk/commit/dae6bf49c9efec755a5b3ac3e379b4004c29a049

## Affected products and versions

- ArtalkJS / Artalk (github.com/artalkjs/artalk/v2): ≥ 0; < 2.10.1 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.39% as of 2026-11-05; percentile 33.82%

- SSVC: exploitation poc; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-918

## Exploit evidence

- exploit: https://hackmd.io/@hieuPenguinnn/artalk-unauthenticated-ssrf-page-key-title-fetch (ADP: CISA-ADP)

## References

- https://github.com/ArtalkJS/Artalk/issues/1199 (CNA: VulnCheck; issue-tracking)

- https://github.com/ArtalkJS/Artalk (CNA: VulnCheck; product)

- https://github.com/ArtalkJS/Artalk/commit/dae6bf49c9efec755a5b3ac3e379b4004c29a049 (CNA: VulnCheck; patch)

- https://github.com/ArtalkJS/Artalk/releases/tag/v2.10.1 (CNA: VulnCheck; release-notes)

- https://github.com/ArtalkJS/Artalk/blob/v2.10.0/internal/dao/service.go#L96-L103 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/artalk-before-2.10.1-unauthenticated-ssrf-via-comment-page-title-fetch (CNA: VulnCheck; third-party-advisory)

- https://hackmd.io/@hieuPenguinnn/artalk-unauthenticated-ssrf-page-key-title-fetch (ADP: CISA-ADP; exploit)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-117565; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-117565; retrieved 2026-11-05; source updated Not reported

Revision: 1c81cab9cbde5d502422ec469472fdb5d281b3ff1b07e6608ea229857adb14c2

Canonical: https://y2.dev/cve/CVE-2026-117565

## 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.