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Vulnerabilities

Vulnerability · CVE-2025-61786

Deno is a JavaScript, TypeScript, and WebAssembly runtime.

Published Oct 8, 2025 · catalog updated Oct 8, 2025 · Deno is a JavaScript,

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-61786. EPSS is 0.20%. Act only if a listed version of Deno is a JavaScript, is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Deno is a JavaScript,).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low3.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.20%
Remediation
Version ranges on file
Affected products
vendor denoland deno 2.3.0, < 2.5.3

Deno is a JavaScript, TypeScript, and WebAssembly runtime. In versions prior to 2.5.3 and 2.2.15, and are not limited by the permission model check . It's possible to retrieve stats from files that the user do not have explicit read access to (the script is executed with ). Similar APIs like and require permission, however, when a file is opened, even with file-write only flags and deny-read permission, it's still possible to retrieve file stats, and thus bypass the permission model. Versions 2.5.3 and 2.2.15 fix the issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor denoland deno 2.3.0, < 2.5.32.3.0, < 2.5.3

How to fix CVE-2025-61786

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-61786. EPSS is 0.20%. Act only if a listed version of Deno is a JavaScript, is installed.

Which versions are affected?

Compare what you have installed with denoland deno 2.3.0, < 2.5.3 2.3.0, < 2.5.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.20%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 8, 2025 · EUVD

    Detected

    Deno is a JavaScript, TypeScript, and WebAssembly runtime. In versions prior to 2.5.3 and 2.2.15, and are not limited by the permission model check . It's possible to retrieve stats from files that the user do not have explicit read access to (the script is executed with ). Similar APIs like and require permission, however, when a file is opened, even with file-write only flags and deny-read permi

  2. Oct 8, 2025 · EUVD

    Updated

    Deno is a JavaScript, TypeScript, and WebAssembly runtime. In versions prior to 2.5.3 and 2.2.15, and are not limited by the permission model check . It's possible to retrieve stats from files that the user do not have explicit read access to (the script is executed with ). Similar APIs like and require permission, however, when a file is opened, even with file-write only flags and deny-read permi

Sources

  • CVE.orgVulnerability recordCVE-2025-61786

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-61786

    30-day exploitation probability 0.20%

    first.org
  • EUVDVulnerability recordEUVD-2025-33180

    Deno is a JavaScript, TypeScript, and WebAssembly runtime. In versions prior to 2.5.3 and 2.2.15, and are not limited by the permission model check . It's possible to retrieve stats from files that the user do not have explicit read access to (the script is executed with ). Simil

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgOct 23, 2026
  • EUVDOct 23, 2026