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  4. CVE 2026 126658 bytestash 1510 before 162 insufficient session
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Back to active CVEs
Medium · CVSS 5.3CVE-2026-126658

ByteStash 1.5.10 before 1.6.2 Insufficient Session Expiration via API KeysCVE-2026-126658

Answer in brief

CVE-2026-126658 records a Medium severity (CVSS 5.3) vulnerability in ByteStash 1.5.10 before 1.6.2 Insufficient Session Expiration via API Keys. The current sources do not mark it as known exploited. The current feed maps jordan-dalby/ByteStash (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 11, 2026Updated Nov 11, 2026Source checked Nov 11, 2026First seen by HOL Nov 11, 2026Material review Nov 11, 2026
Upstream Advisory

Record context

Vulnerability class
Tool Poisoning
EPSS
Not reported
CWE IDs
CWE-613
Source
CVE List V5
Source checked
Nov 11, 2026
References
5 linked sources
Open source record

Key facts

Risk
Medium · CVSS 5.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps jordan-dalby/ByteStash (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
jordan-dalby/ByteStashgeneric>=1.5.10 <1.6.21.6.2

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for jordan-dalby/ByteStash.
  2. 2Review the reported fix. Update jordan-dalby/ByteStash to 1.6.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 11, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 11, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.