Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-76236— stigmem before 0.9.0a12 Cross-Tenant BOLA via Tombstones

Quick assessment

Affected
eidetic-labs stigmem-node
Exploitation
Public or AI PoC available; prioritize validation
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 0.9.0a12之前版本存在授权问题漏洞，该漏洞源于跨租户对象级授权缺陷，在RTBF墓碑机制中issue_tombstone默认将租户设置为"default"而非调用者的租户，且读取抑制路径缺少tenant_id谓词，导致删除记录被写入错误租户，墓碑抑制跨租户盲目应用，可能隐藏其他租户的事实或未能隐藏正确租户的事实，破坏数据隔离和RTBF保证。

CVSS 7.2 · High EPSS 0.36% · P28

Possible ATT&CK Techniques 2 AI

T1530.001 T1530 · Data from Cloud Storage

Affected Version Matrix 2

VendorProduct Version RangeStatus
eidetic-labs stigmem-node < 0.9.0a12 affected
0.9.0a12 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-76236

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
stigmem before 0.9.0a12 Cross-Tenant BOLA via Tombstones
Source: CVE Program / CVE List V5
Vulnerability Description
stigmem-node before 0.9.0a12 contains a cross-tenant broken object level authorization (BOLA) flaw in the RTBF (right-to-be-forgotten) tombstone mechanism. issue_tombstone defaulted the tenant to "default" instead of the caller's tenant, allowing deletion records to be written to the wrong tenant, and the read-suppression path (_get_tombstone_filter and the tombstone scope cache) lacked a tenant_id predicate, so tombstone suppression was applied tenant-blind across fact queries and provenance reads. As a result, a tenant's deletion could be attributed to the wrong tenant and tombstone suppression could either hide facts belonging to other tenants or fail to hide facts within the correct tenant, undermining data isolation and RTBF guarantees. The issue is exploitable only on multi-tenant deployments running the opt-in stigmem-plugin-multi-tenant; single-tenant deployments are unaffected. Fixed in 0.9.0a12.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
eidetic-labs stigmem 授权问题漏洞
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 0.9.0a12之前版本存在授权问题漏洞，该漏洞源于跨租户对象级授权缺陷，在RTBF墓碑机制中issue_tombstone默认将租户设置为"default"而非调用者的租户，且读取抑制路径缺少tenant_id谓词，导致删除记录被写入错误租户，墓碑抑制跨租户盲目应用，可能隐藏其他租户的事实或未能隐藏正确租户的事实，破坏数据隔离和RTBF保证。
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 ~ 0.9.0a12 -

II. Public POCs for CVE-2026-76236

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
Upgrade to Pro+
claude_code · 9361 chars
GitHub 复现环境（可 clone 直接跑）
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-76236

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-76236 (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-2026-76245 7.1 HIGH stigmem Federation Peer Token Timestamp Validation Bypass
CVE-2026-76239 6.3 MEDIUM Stigmem before 0.9.0a11 SSRF via unvalidated webhook delivery_address

IV. Related Vulnerabilities

Same product: stigmem-node
Same vendor: eidetic-labs
Same weakness: CWE-639

V. Comments for CVE-2026-76236

No comments yet

Leave a comment