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CVE-2026-76239— Stigmem before 0.9.0a11 SSRF via unvalidated webhook delivery_address

Quick assessment

Affected
eidetic-labs stigmem-node
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.

eidetic-labs stigmem是eidetic-labs组织的一款威胁情报网络产品。 eidetic-labs stigmem 0.9.0a11之前版本存在服务端请求伪造漏洞，该漏洞源于未验证delivery_address参数，可能导致认证用户指定内部回环和私有网络目标，攻击者通过触发事实变更事件使服务器向内部服务发起HTTP POST请求，从而对localhost和私有网络端点进行盲SSRF攻击。

CVSS 6.3 · Medium EPSS 0.27% · P19

Affected Version Matrix 2

VendorProduct Version RangeStatus
eidetic-labs stigmem-node < 0.9.0a11 affected
0.9.0a11 unaffected
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I. Basic Information for CVE-2026-76239

Vulnerability Information
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Vulnerability Title
Stigmem before 0.9.0a11 SSRF via unvalidated webhook delivery_address
Source: CVE Program / CVE List V5
Vulnerability Description
Stigmem before 0.9.0a11 fails to validate the delivery_address parameter when creating webhook subscriptions, allowing authenticated users to specify internal loopback and private network destinations. Attackers can trigger matching fact-change events to cause the Stigmem server to issue server-side HTTP POST requests to internal services, enabling blind SSRF attacks against localhost and private network endpoints.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
eidetic-labs stigmem 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
eidetic-labs stigmem是eidetic-labs组织的一款威胁情报网络产品。 eidetic-labs stigmem 0.9.0a11之前版本存在服务端请求伪造漏洞，该漏洞源于未验证delivery_address参数，可能导致认证用户指定内部回环和私有网络目标，攻击者通过触发事实变更事件使服务器向内部服务发起HTTP POST请求，从而对localhost和私有网络端点进行盲SSRF攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
eidetic-labs stigmem-node 0 ~ 0.9.0a11 -

II. Public POCs for CVE-2026-76239

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III. Intelligence Information for CVE-2026-76239

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Vendor Advisories for CVE-2026-76239 (2)

Same Patch Batch · eidetic-labs · 2026-08-19 · 10 CVEs total

CVE-2026-76243 9.2 CRITICAL stigmem before 0.9.0a2 Authentication Bypass via Disabled Auth
CVE-2026-76242 9.1 CRITICAL stigmem Federation Peer Registration Authentication Bypass
CVE-2026-76244 9.1 CRITICAL stigmem-node Insecure Federation Transport Configuration
CVE-2026-76237 8.6 HIGH stigmem before 0.9.0a12 Cross-Tenant BOLA via quarantine
CVE-2026-76240 7.5 HIGH stigmem Postgres SQL Injection via Schema Identifier
CVE-2026-76241 7.3 HIGH stigmem Plugin Signature Enforcement Bypass via Configuration
CVE-2026-76238 7.2 HIGH stigmem before 0.9.0a12 Cross-Tenant BOLA via decay sweep
CVE-2026-76236 7.2 HIGH stigmem before 0.9.0a12 Cross-Tenant BOLA via Tombstones
CVE-2026-76245 7.1 HIGH stigmem Federation Peer Token Timestamp Validation Bypass

IV. Related Vulnerabilities

Same product: stigmem-node
Same vendor: eidetic-labs
Same weakness: CWE-918

V. Comments for CVE-2026-76239

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