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TI-2025-40885 Aliases CVE-2025-66453GHSA-3w8q-xq97-5j7x

Rhino vulnerable high CPU usage and potential DoS when passing specific numbers to toFixed() function

Priority LOW 31CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-400.

Summary

Rhino is an open-source implementation of JavaScript written entirely in Java. Prior to 1.8.1, 1.7.15.1, and 1.7.14.1, when an application passed an attacker controlled float poing number into the toFixed() function, it might lead to high CPU consumption and a potential Denial of Service. Small numbers go through this call stack: NativeNumber.numTo > DToA.JS_dtostr > DToA.JS_dtoa > DToA.pow5mult where pow5mult attempts to raise 5 to a ridiculous power. This vulnerability is fixed in 1.8.1, 1.7.15.1, and 1.7.14.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00291 21st percentileScored 2026-11-07
Fix Fixed rhino (mozilla): 1.8.1, 1.7.15.1, 1.7.14.1org.mozilla:rhino (Maven): 1.7.14.1, 1.7.15.1, 1.8.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Mozillarhino1.8.0 to before 1.8.1; 1.7.15 to before 1.7.15.1; before 1.7.14.11.8.1, 1.7.15.1, 1.7.14.1Patch availableCNA
—org.mozilla:rhino (Maven)before 1.7.14.11.7.14.1Patch availableGHSA-3w8q-xq97-5j7x
—org.mozilla:rhino (Maven)1.7.15 to before 1.7.15.11.7.15.1Patch availableGHSA-3w8q-xq97-5j7x
—org.mozilla:rhino (Maven)1.8.0 to before 1.8.11.8.1Patch availableGHSA-3w8q-xq97-5j7x
  • rhino VendorMozilla Affected 1.8.0 to before 1.8.1; 1.7.15 to before 1.7.15.1; before 1.7.14.1 Fixed in 1.8.1, 1.7.15.1, 1.7.14.1 Patch available CNA
  • org.mozilla:rhino (Maven) Vendor— Affected before 1.7.14.1 Fixed in 1.7.14.1 Patch available GHSA-3w8q-xq97-5j7x
  • org.mozilla:rhino (Maven) Vendor— Affected 1.7.15 to before 1.7.15.1 Fixed in 1.7.15.1 Patch available GHSA-3w8q-xq97-5j7x
  • org.mozilla:rhino (Maven) Vendor— Affected 1.8.0 to before 1.8.1 Fixed in 1.8.1 Patch available GHSA-3w8q-xq97-5j7x

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:rhino:*:*:*:*:*:*:*:*before 1.7.14.1VulnerableMozilla
cpe:2.3:a:mozilla:rhino:1.7.15:*:*:*:*:*:*:*1.7.15VulnerableMozilla
cpe:2.3:a:mozilla:rhino:1.8.0:*:*:*:*:*:*:*1.8.0VulnerableMozilla
  • cpe:2.3:a:mozilla:rhino:*:*:*:*:*:*:*:* Versions before 1.7.14.1 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:rhino:1.7.15:*:*:*:*:*:*:* Versions 1.7.15 Vulnerable ·Mozilla
  • cpe:2.3:a:mozilla:rhino:1.8.0:*:*:*:*:*:*:* Versions 1.8.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA rhino (mozilla) Fixed in 1.8.1, 1.7.15.1, 1.7.14.1
  • Fix · GHSA-3w8q-xq97-5j7x org.mozilla:rhino (Maven) Fixed in 1.7.14.1 Advisory →
  • Fix · GHSA-3w8q-xq97-5j7x org.mozilla:rhino (Maven) Fixed in 1.7.15.1 Advisory →
  • Fix · GHSA-3w8q-xq97-5j7x org.mozilla:rhino (Maven) Fixed in 1.8.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-66453
  2. 2026-10-03 Alias added: GHSA-3w8q-xq97-5j7x

References

Advisory 2

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences