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Out-of-bounds ReadWeakness · CWE-125

CVE-2026-58307

MEDIUM · 6.1 CVSS v3.1 Published 2026-07-09
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
64/100
Remediation priority · Elevated
No privileges Patch available 6 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Out-of-bounds read, Reachable assertion vulnerability in Samsung Open Source Escargot allows Overread Buffers, Input Data Manipulation. This issue affects Escargot: before 2dee22f5c7b8bf31cb7252d7731fae8c07f2842c.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-125

The code reads past the end (or before the start) of a buffer, returning memory that was never meant to be exposed. Attackers use it to leak secrets like keys or to defeat memory-protection defences. Remediation is validating indices and lengths before every read.

General guidance for the out-of-bounds read class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

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

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix Moderate confidence

Commit 2dee22f5c7b8bf31cb7252d7731fae8c07f2842c or later

  1. 1. Identify the current Escargot version or commit hash in use by checking your project dependencies or build configuration
  2. 2. Clone or update the Escargot repository: git clone https://github.com/Samsung/escargot.git or cd escargot && git fetch origin
  3. 3. Checkout the fixed commit: git checkout 2dee22f5c7b8bf31cb7252d7731fae8c07f2842c
  4. 4. Rebuild Escargot following the project's build instructions in the README
  5. 5. Replace the existing Escargot library/binary with the newly built version
  6. 6. Test your application to ensure the JavaScript engine functions correctly with the updated Escargot

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-58307 in production — separate from our analysis above.

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