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CVE-2026-105690— Penpot: Server-side session not invalidated on logout; stale auth-token cookie remains valid for full profile access

Quick assessment

Affected
penpot penpot
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Penpot 是一款开源的设计与原型制作平台。在 2.18.0 版本之前，用户执行登出操作时，系统会清除浏览器中的身份验证令牌（auth-token）Cookie，但并未撤销服务器端对应的会话（session）。因此，攻击者此前截获的会话令牌在受害者登出后仍然有效，可继续以受害者的权限发起身份验证请求，直到该会话自然过期。此问题已在 2.18.0 版本中修复。

CVSS 5.9 · Medium

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token
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I. Basic Information for CVE-2026-105690

Vulnerability Information
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Vulnerability Title
Penpot: Server-side session not invalidated on logout; stale auth-token cookie remains valid for full profile access
Source: CVE Program / CVE List V5
Vulnerability Description
Penpot is an open-source design and prototyping platform. Prior to 2.18.0, logout clears the browser's auth-token cookie without revoking the corresponding server-side session. A previously captured session token remains usable after the victim logs out and can continue to make authenticated requests with the victim's authority until natural expiration. This issue is fixed in version 2.18.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
penpot penpot < 2.18.0 -

II. Public POCs for CVE-2026-105690

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III. Intelligence Information for CVE-2026-105690

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Other References for CVE-2026-105690 (3)

Same Patch Batch · penpot · 2026-10-05 · 12 CVEs total

CVE-2026-105691 9.9 CRITICAL Penpot: Authenticated OS Command Injection in Penpot SVG Exporter via Legacy fill-color
CVE-2026-105688 6.7 MEDIUM Penpot: Team admin can escalate to owner via team invitation (missing owner-role guard on
CVE-2026-105696 6.5 MEDIUM Penpot: Share-link page-scope escalation: a share-link holder reads pages outside the link
CVE-2026-105689 6.0 MEDIUM Penpot: SSRF guard bypass via IPv6 transition addresses (NAT64/6to4/Teredo) in webhook del
CVE-2026-105695 5.9 MEDIUM Penpot: Missing authorization in chunked-upload assembly lets another authenticated user c
CVE-2026-105694 5.4 MEDIUM Penpot: Stored XSS via Unsanitised SVG Uploads
CVE-2026-105692 5.4 MEDIUM Penpot: IDOR in Share-Link Deletion Allows Any File Editor to Delete Share-Links They Did
CVE-2026-105693 5.3 MEDIUM Penpot: Anonymous share-link token disclosure & page-scope bypass via get-view-only-bundle
CVE-2026-105686 5.3 MEDIUM Penpot: Repeated chunk index causes temporary-storage amplification
CVE-2026-105687 4.9 MEDIUM Penpot: A team admin (non-owner) can remove the team owner via ::delete-team-member — miss
CVE-2026-105684 4.3 MEDIUM Penpot: Share-link page-scope escape — comment RPCs leak comment content, author identity,

IV. Related Vulnerabilities

Same product: penpot
Same vendor: penpot
Same weakness: CWE-613

V. Comments for CVE-2026-105690

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