ByteStash 1.5.10 before 1.6.2 contains an insufficient session expiration vulnerability that allows holders of API keys to keep access after account deactivation because validateApiKey never checks account status. Attackers holding a deactivated account's API key can read, create, modify and delete its snippets via /api/snippets and use every MCP tool via /mcp.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00232.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
jordan-dalby ByteStash unaffected
Version Status Constraints
1.5.10 affected < 1.6.2
1.6.2 unaffected —

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/jordan-dalby/ByteStash/blob/v1.6.1/server/src/repositories/apiKeyRepository.js#L70-L78 cve-icon cve-icon
https://github.com/jordan-dalby/ByteStash/commit/eb4ecdfc30f2e7d1424137fa7fe3a9eed663218b cve-icon cve-icon
https://github.com/jordan-dalby/ByteStash/releases/tag/v1.6.2 cve-icon cve-icon
https://github.com/jordan-dalby/ByteStash/security/advisories/GHSA-26m9-ww2j-3cr5 cve-icon cve-icon
https://notes.netbytesec.com/2026/11/cve-2026-126658-bytestash-1510-before.html cve-icon cve-icon
https://www.vulncheck.com/advisories/bytestash-1.5.10-before-1.6.2-insufficient-session-expiration-via-api-keys cve-icon cve-icon
History

Sat, 14 Nov 2026 13:15:00 +0000

Type Values Removed Values Added
References

Wed, 11 Nov 2026 12:45:00 +0000

Type Values Removed Values Added
Description ByteStash 1.5.10 before 1.6.2 contains an insufficient session expiration vulnerability that allows holders of API keys to keep access after account deactivation because validateApiKey never checks account status. Attackers holding a deactivated account's API key can read, create, modify and delete its snippets via /api/snippets and use every MCP tool via /mcp.
Title ByteStash 1.5.10 before 1.6.2 Insufficient Session Expiration via API Keys
Weaknesses CWE-613
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-14T13:05:32.828Z

Reserved: 2026-11-11T11:58:21.462Z

Link: CVE-2026-126658

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-11T13:17:23.993

Modified: 2026-11-14T13:17:20.563

Link: CVE-2026-126658

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-13T19:45:21Z

Weaknesses