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CVE-2026-103291— Ghost 3.20.2 before 6.51.0 SSRF via image-size fetch

Quick assessment

Affected
TryGhost Ghost
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.

Ghost 3.20.2 至 6.51.0（不含）版本中存在一个服务端请求伪造（SSRF）漏洞，该漏洞存在于图像尺寸重新获取功能中。经过身份验证的工作人员用户可以利用此漏洞触发向任意 URL 发起的出站 HTTP 请求。攻击者可将图像卡片指向其控制的服务器或内部网络端点，从而访问从公共互联网无法触及的元数据服务及内部资源。

CVSS 6.4 · Medium

Possible ATT&CK Techniques 1 AI

T1090 · Proxy
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I. Basic Information for CVE-2026-103291

Vulnerability Information
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Vulnerability Title
Ghost 3.20.2 before 6.51.0 SSRF via image-size fetch
Source: CVE Program / CVE List V5
Vulnerability Description
Ghost versions from 3.20.2 before 6.51.0 contain a server-side request forgery vulnerability in image dimension refetching that allows authenticated staff users to trigger outbound HTTP requests to arbitrary URLs. Attackers can point image cards at attacker-controlled hosts or internal network endpoints to access metadata services and internal resources unavailable from the public internet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TryGhost Ghost 3.20.2 ~ 6.51.0 -

II. Public POCs for CVE-2026-103291

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III. Intelligence Information for CVE-2026-103291

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Vendor Advisories for CVE-2026-103291 (2)

Same Patch Batch · TryGhost · 2026-10-01 · 26 CVEs total

CVE-2026-103268 8.8 HIGH Ghost 1.0.0 before 6.62.0 Suspension Bypass via Password Reset
CVE-2026-103283 8.1 HIGH Ghost 6.20.0 before 6.57.1 Authentication Bypass via Session Handling
CVE-2026-103277 8.1 HIGH Ghost 2.5.0 before 6.34.0 Untrusted Script Execution via oEmbed
CVE-2026-103292 8.0 HIGH Ghost 0.5.3 before 6.50.0 Cross-Site Scripting via ghost_head
CVE-2026-103271 7.5 HIGH Ghost 4.0.0 before 6.63.0 Restricted Content Bypass
CVE-2026-103272 7.5 HIGH Ghost 2.10.0 before 6.63.0 Staff Enumeration via Content API
CVE-2026-103286 7.3 HIGH Ghost 2.21.0 before 6.56.0 Privilege Escalation via Notifications
CVE-2026-103278 7.3 HIGH Ghost 5.8.0 before 6.34.0 Staff Account Takeover via Admin iframe
CVE-2026-103266 7.1 HIGH Ghost 5.2.0 before 6.62.0 Unauthenticated Stripe Checkout Account Modification
CVE-2026-103279 6.8 MEDIUM Ghost 3.10.0 before 6.34.0 Session Invalidation Bypass
CVE-2026-103288 6.5 MEDIUM Ghost 5.9.0 before 6.44.1 Authorization Bypass via Comment Like
CVE-2026-103289 6.5 MEDIUM Ghost 5.9.0 before 6.44.1 Authorization Bypass via Comments
CVE-2026-103281 5.4 MEDIUM Ghost 3.23.0 before 6.23.0 API Key Exposure via Admin API
CVE-2026-103274 5.3 MEDIUM Ghost 5.3.0 before 6.58.0 Unauthenticated Comment Read
CVE-2026-103280 5.3 MEDIUM Ghost 0.8.0 before 6.23.0 Information Disclosure via Setup Endpoint
CVE-2026-103269 5.3 MEDIUM Ghost 5.3.0 before 6.62.0 Missing Authorization via Post Excerpts
CVE-2026-103276 5.3 MEDIUM Ghost before 6.20.0 File Read via URL Encoding Bypass
CVE-2026-103284 4.3 MEDIUM Ghost 5.125.1 before 6.57.1 Information Disclosure via Feedback
CVE-2026-103282 4.3 MEDIUM Ghost 0.5.0 before 6.23.0 Multiple Account Creation via Invite Token
CVE-2026-103275 4.3 MEDIUM Ghost 5.42.2 before 6.58.0 Password Hash Disclosure

Showing top 20 of 26 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Ghost
Same vendor: TryGhost
Same weakness: CWE-918

V. Comments for CVE-2026-103291

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