CVE-2026-76238
stigmem before 0.9.0a12 Cross-Tenant BOLA via decay sweep
Description
stigmem versions before 0.9.0a12 contain a broken object level authorization vulnerability in the decay sweep endpoint that allows authenticated attackers with write credentials for one tenant to execute decay operations affecting all tenants. Attackers can submit POST requests to the decay sweep endpoint with ttl_seconds=0 to expire facts across all tenants, or use dry_run to obtain cross-tenant fact counts and existence information.
INFO
Published Date :
Aug. 19, 2026, 2:17 p.m.
Last Modified :
Sept. 24, 2026, 8:43 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update stigmem to version 0.9.0a12 or newer.
- Restrict write credentials to specific tenants.
- Monitor decay sweep endpoint activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-76238.
| URL | Resource |
|---|---|
| https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-6gqw-jqv7-v88m | |
| https://www.vulncheck.com/advisories/stigmem-before-0a12-cross-tenant-bola-via-decay-sweep |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-76238 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-76238
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-76238 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-76238 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 25, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-76238', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-25T02:00:35.384090Z'} -
CVE Modified by [email protected]
Aug. 21, 2026
Action Type Old Value New Value Changed Affected [{'vendor': 'eidetic-labs', 'product': 'stigmem', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.9.0a12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '0.9.0a12', 'versionType': 'semver'}], 'packageURL': 'pkg:pypi/stigmem-node', 'defaultStatus': 'unaffected'}] [{'vendor': 'eidetic-labs', 'product': 'stigmem-node', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.9.0a12', 'versionType': 'python'}, {'status': 'unaffected', 'version': '0.9.0a12', 'versionType': 'python'}], 'packageURL': 'pkg:pypi/stigmem-node', 'defaultStatus': 'unaffected'}] -
New CVE Received by [email protected]
Aug. 19, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'eidetic-labs', 'product': 'stigmem', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.9.0a12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '0.9.0a12', 'versionType': 'semver'}], 'packageURL': 'pkg:pypi/stigmem-node', 'defaultStatus': 'unaffected'}] Added Description stigmem versions before 0.9.0a12 contain a broken object level authorization vulnerability in the decay sweep endpoint that allows authenticated attackers with write credentials for one tenant to execute decay operations affecting all tenants. Attackers can submit POST requests to the decay sweep endpoint with ttl_seconds=0 to expire facts across all tenants, or use dry_run to obtain cross-tenant fact counts and existence information. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-863 Added Reference https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-6gqw-jqv7-v88m Added Reference https://www.vulncheck.com/advisories/stigmem-before-0a12-cross-tenant-bola-via-decay-sweep