CVE-2026-61866

Resource exhaustion via failed JNG blob open

Published Jul 15, 2026 · Updated Jul 15, 2026

Memory leakage in the JNG encoder in ImageMagick before 7.1.2-26 allows local users to exhaust memory through failed blob operations. The encoder leaves memory allocated on the error path after its attempt to open the output blob fails. Repeated local invocation with malformed JNG input is required to accumulate leaked memory and degrade availability; no data disclosure or modification is reported.

CVSS severity2.1
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory leakage in the JNG encoder in ImageMagick before 7.1.2-26 allows local users to exhaust memory through failed blob operations. The encoder leaves memory allocated on the error path after its attempt to open the output blob fails. Repeated local invocation with malformed JNG input is required to accumulate leaked memory and degrade availability; no data disclosure or modification is reported.

The record

CVE
CVE-2026-61866
Published
Jul 15, 2026
Updated
Jul 15, 2026
Vendor
ImageMagick Studio LLC
Product
ImageMagick
Classifications
CWE-401
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <7.1.2-26

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

ImageMagick Studio LLC · ImageMagickversion=0 <7.1.2-26

Published CVSS scores

2.1VulnCheckCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
2.9VulnCheckCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo