CVE-2026-126658

MEDIUM 5.4

ByteStash 1.5.10 before 1.6.2 Insufficient Session Expiration via API Keys

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-613
Vendor	jordan-dalby
Product	bytestash
Published	Nov 11, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

jordan-dalby / ByteStash

1.5.10 < 1.6.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/jordan-dalby/ByteStash/security/advisories/GHSA-26m9-ww2j-3cr5 github.com: https://github.com/jordan-dalby/ByteStash/commit/eb4ecdfc30f2e7d1424137fa7fe3a9eed663218b github.com: https://github.com/jordan-dalby/ByteStash/releases/tag/v1.6.2 github.com: https://github.com/jordan-dalby/ByteStash/blob/v1.6.1/server/src/repositories/apiKeyRepository.js#L70-L78 vulncheck.com: https://www.vulncheck.com/advisories/bytestash-1.5.10-before-1.6.2-insufficient-session-expiration-via-api-keys

Credits

Adib Farhan Jordan Dalby