CVE-2025-71330: image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanentl

This week

HIGH 7.5REMOTEUPGRADE

CVE-2025-71330 is a high-severity flaw (CVSS 7.5) affecting image-size. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanently block the Node.js event loop by supplying a specially crafted ICNS image buffer. Attackers can craft an ICNS buffer containing valid magic bytes and a zero-valued entry length field to trigger an infinite loop in the ICNS parser, as the offset is never incremented when the entry length field is 0, causing the while loop condition to rem

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-835
Published	2026-06-10
Last modified	2026-10-12

Publisher (CNA): VulnCheck · Vendor: image-size

Last updated 2026-10-12 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-10 14:16 UTCPublished CVE record published
2026-10-12 22:10 UTCUpdated Record last modified

image-size image-size UPGRADE

Affected: >= 1.1.0 and <= 1.2.1 · >= 2.0.0 and <= 2.0.2

Fixed in: newer than 2.0.2

Safe to downgrade to: a release before 1.1.0

1. Check installed version

apt-cache policy image-size || rpm -q image-size || image-size --version

2. UPGRADE to newer than 2.0.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade image-size

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade image-size

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.1.0 (Debian / Ubuntu)

apt-cache madison image-size sudo apt install image-size=<VERSION_BEFORE_1.1.0> sudo apt-mark hold image-size

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list image-size sudo dnf downgrade image-size-<VERSION_BEFORE_1.1.0> sudo dnf versionlock add image-size

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-71330?

image-size: upgrade to newer than 2.0.2. Exact commands for each OS are on this page.

Is CVE-2025-71330 being exploited?

CVE-2025-71330 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-71330 affect?

CVE-2025-71330 affects image-size. Severity is high (CVSS 7.5). image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanently block the Node.js event loop by supplying a specially crafted ICNS image buffer. Attackers can craft an ICNS buffer containing v

How urgent is CVE-2025-71330?

Priority 46/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Node.js vulnerabilities

Related CVEs

CVE-2025-71329 HIGH 7.5 UPGRADE image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanentl

References

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