CVE-2026-61866: ImageMagick before 7.1.2-26 Memory Leak in JNG encoder
Analyzed
AliasesUBUNTU-CVE-2026-61866DEBIAN-CVE-2026-61866CGA-jj9w-x2q8-67jcCGA-p97c-c2cx-45ggGHSA-99w9-hv66-rfv7
Published 15-07-2026Last modified 15-07-2026
Vulnerability summary
CVE-2026-61866 is a high (CVSS 7.5) vulnerability in imagemagick. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 7.9% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 8 · Related 8Timeline
- 15-07-2026PublishedVulnerability first disclosed.
- 15-07-2026Last modifiedVulnerability information updated.
Description
ImageMagick before 7.1.2-26 contains a memory leak vulnerability in the JNG encoder when a blob cannot be opened. Attackers can trigger the memory leak by providing malformed JNG files that fail blob operations, causing resource exhaustion.
CVSS metrics
9 scores · 6 sources · 2 versionsLow 2.1Preferred score · CVE.org (CNA)
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated2.1LowCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- OSV · ChainguardEcosystem advisory · calculated2.1LowCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- NVDNIST2.1LowCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
High 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSources5 sources · 2.9–7.5
- CVE.orgCNA2.9LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · NugetEcosystem advisory · calculated2.9LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:LDiffers
EPSS trend
Probability
0.19%
Chance of exploitation in the next 30 days
Percentile
8%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.19% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
NuGet17 products
- magick.net-q16-anycpu< 14.15.0
- Magick.NET-Q16-arm64< 14.15.0
- magick.net-q16-hdri-anycpu< 14.15.0
- Magick.NET-Q16-HDRI-arm64< 14.15.0
- Magick.NET-Q16-HDRI-OpenMP-arm64< 14.15.0
Chainguard1 product
- imagemagick-6All versions (No fix recorded)
Debian1 product
- imagemagick< 8:6.9.11.60+dfsg-1.6+deb12u13 | < 8:7.1.1.43+dfsg1-1+deb13u12 | < 8:7.1.2.26+dfsg1-1
Imagemagick1 product
- imagemagick< 7.1.2-26
Ubuntu1 product
- imagemagick< 8:6.9.7.4+dfsg-16ubuntu6.15+esm16 | < 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm14 | < 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14 | < 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13 | All versions (No fix recorded) | < 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
5 vendors · 21 products
References
11 links- github.com/ImageMagick/ImageMagick/security/advisories/GHSA-99w9-hv66-rfv7Vendor AdvisoryREPORTAdvisoryWEB
- www.vulncheck.com/advisories/imagemagick-before-26-memory-leak-in-jng-encoderThird Party AdvisoryAdvisory
