CVE-2026-56366: ImageMagick before 7.1.2-18 contains a memory leak vulnerability in the META reader when processing APP1JPEG i

Routine

LOW 3.3UPGRADE

CVE-2026-56366 is a low-severity flaw (CVSS 3.3) affecting imagemagick. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ImageMagick before 7.1.2-18 contains a memory leak vulnerability in the META reader when processing APP1JPEG input paths. Attackers can trigger this memory leak by providing specially crafted APP1JPEG image files, causing denial of service through resource exhaustion.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.3 (Low)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-401
Published	2026-07-10
Last modified	2026-10-25

Publisher (CNA): VulnCheck · Vendor: imagemagick

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-10 15:16 UTCPublished CVE record published
2026-10-25 15:10 UTCUpdated Record last modified

imagemagick imagemagick UPGRADE

Affected: < 6.9.13-43 · >= 7.0.0-0 and < 7.1.2-18

Fixed in: 6.9.13-43, 7.1.2-18

Safe to downgrade to: a release before 7.0.0-0

1. Check installed version

apt-cache policy imagemagick || rpm -q imagemagick || imagemagick --version

2. UPGRADE to 6.9.13-43 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade imagemagick

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade imagemagick

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 7.0.0-0 (Debian / Ubuntu)

apt-cache madison imagemagick sudo apt install imagemagick=<VERSION_BEFORE_7.0.0-0> sudo apt-mark hold imagemagick

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

dnf --showduplicates list imagemagick sudo dnf downgrade imagemagick-<VERSION_BEFORE_7.0.0-0> sudo dnf versionlock add imagemagick

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-2026-56366?

imagemagick: upgrade to 6.9.13-43, 7.1.2-18. Exact commands for each OS are on this page.

Is CVE-2026-56366 being exploited?

CVE-2026-56366 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-2026-56366 affect?

CVE-2026-56366 affects imagemagick. Severity is low (CVSS 3.3). ImageMagick before 7.1.2-18 contains a memory leak vulnerability in the META reader when processing APP1JPEG input paths. Attackers can trigger this memory leak by providing specially crafted APP1JPEG image files, causing denial of service

How urgent is CVE-2026-56366?

Priority 13/100. No elevated risk signals yet.

Software pages

ImageMagick vulnerabilities

Related CVEs

CVE-2026-56365 LOW 3.7 UPGRADE ImageMagick before 7.1.2-19 contains a memory leak vulnerability in the PNG encoder when writing MNG images
CVE-2026-56364 LOW 1.9 UPGRADE ImageMagick before 7.1.2-13 contains a memory leak vulnerability in LoadOpenCLDeviceBenchmark() function when
CVE-2026-56377 LOW 3.3 UPGRADE ImageMagick before 7.1.2-24 contains an incorrect policy check that allows attackers to create or truncate fil
CVE-2026-56363 LOW 3.3 UPGRADE ImageMagick before 7.1.2-22 contains a division by zero vulnerability in binomial kernel processing that allow
CVE-2026-56373 LOW 3.7 UPGRADE ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses a stale point

References

← Back to latest CVEs