Unauthenticated SSRF in Artalk via comment page title fetch
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.
Summary
Artalk before 2.10.1 contains an unauthenticated server-side request forgery flaw (CWE-918) that lets remote attackers make the server fetch arbitrary URLs. Anonymous comments submitted to the comment API can set a page key to an internal URL, which the server fetches after only scheme validation. The attacker can then read the fetched page title through the public comment list.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade ArtalkJS Artalk to version 2.10.1, which fixes the flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
- Fix · CNA Artalk (ArtalkJS) Fixed in 2.10.1
Timeline
- 2026-10-27 Threatist record created from CVE-2026-117565
- 2026-10-27 Alias added: GHSA-m4rh-857p-qh9p
- 2026-10-28 Priority changed: MEDIUM → LOW
- 2026-11-05 CISA SSVC decision points changed
- 2026-11-05 Priority changed: LOW → HIGH
References
Sources
- CVE-2026-117565 · CVE Program
- CVE-2026-117565 · NVD
- FIRST EPSS
- GHSA-m4rh-857p-qh9p · GitHub Advisory Database · CC BY 4.0
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