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

This week

HIGH 7.5REMOTEUPGRADE

CVE-2025-71329 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 image buffer with a zero-valued size field in a recognized box-type. Attackers can trigger an infinite loop in the JXL or HEIF image parsers by providing a crafted image containing a box with a size of zero, causing the offset to never advance and permanently hanging the appl

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-2025-71329?

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

Is CVE-2025-71329 being exploited?

CVE-2025-71329 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-2025-71329 affect?

CVE-2025-71329 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 image buffer with a zero-valued size field in a recognized box-typ

How urgent is CVE-2025-71329?

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

Software pages

Node.js vulnerabilities

Related CVEs

CVE-2025-71330 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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