CVE-2026-97058Hinoki check available

Service interruption via unbounded precision specifiers

Published Sep 24, 2026 · Updated Sep 24, 2026

Denial of service in Alexandru Mărășteanu sprintf-js 1.1.3 and earlier allows attackers to abort operations via crafted format strings. The formatter accepts unbounded decimal precision in e, f, and g placeholders and passes it directly to Number.toExponential, Number.toFixed, or Number.toPrecision, which throws RangeError outside ECMAScript limits. An attacker must control a consumed format string; an uncaught exception interrupts the calling operation.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in Alexandru Mărășteanu sprintf-js 1.1.3 and earlier allows attackers to abort operations via crafted format strings. The formatter accepts unbounded decimal precision in e, f, and g placeholders and passes it directly to Number.toExponential, Number.toFixed, or Number.toPrecision, which throws RangeError outside ECMAScript limits. An attacker must control a consumed format string; an uncaught exception interrupts the calling operation.

The record

CVE
CVE-2026-97058
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
Alexandru Mărășteanu
Product
sprintf-js
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <=1.1.3

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Alexandru Mărășteanu · sprintf-jsversion=0 <=1.1.3

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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