CVE-2026-56366

MEDIUMNVD 6.53.3▼
EchelonGraph scoreMEDIUM confidence

Score 3.3 from GitHub Security Advisory published 2026-07-10. NVD baseline CVSS 6.5; sources differ by 3.2.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.5
EG Score
3.3(medium)
EG Risk
—
EPSS
6.6%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 14, 2026

Advisory Details (2)

Auto-updated Jul 13, 2026
Patch available. Sources: github.
generic

ImageMagick - Memory Leak in META Reader APP1JPEG Error Path | Advisories | VulnCheck

https://www.vulncheck.com/advisories/imagemagick-memory-leak-in-meta-reader-app1jpeg-error-path
github Patch Available

META reader memory leak in the APP1JPEG error path · Advisory · ImageMagick/ImageMagick · GitHub

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-9r56-3gjq-hqf7

Vendor Advisories for CVE-2026-56366(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(18 across 1 ecosystem)
NuGet(18)
PackageVulnerable rangeFixed inDependents
Magick.NET-Q16-AnyCPU10.0.0 ... 9.1.2 (212 versions)14.11.1—
Magick.NET-Q16-arm6410.0.0 ... 9.1.2 (57 versions)14.11.1—
Magick.NET-Q16-HDRI-AnyCPU10.0.0 ... 9.1.2 (209 versions)14.11.1—
Magick.NET-Q16-HDRI-arm6410.0.0 ... 9.1.2 (57 versions)14.11.1—
Magick.NET-Q16-HDRI-OpenMP-arm6410.0.0 ... 9.1.2 (57 versions)14.11.1—
Magick.NET-Q16-HDRI-x6410.0.0 ... 9.1.2 (209 versions)14.11.1—
Magick.NET-Q16-HDRI-x8610.0.0 ... 9.1.2 (209 versions)14.11.1—
Magick.NET-Q16-OpenMP-arm6410.0.0 ... 9.1.2 (57 versions)14.11.1—
Magick.NET-Q16-OpenMP-x6410.0.0 ... 9.1.2 (109 versions)14.11.1—
Magick.NET-Q16-OpenMP-x86—14.11.1—
Magick.NET-Q16-x6410.0.0 ... 9.1.2 (228 versions)14.11.1—
Magick.NET-Q16-x8610.0.0 ... 9.1.2 (228 versions)14.11.1—
Magick.NET-Q8-AnyCPU10.0.0 ... 9.1.2 (212 versions)14.11.1—
Magick.NET-Q8-arm6410.0.0 ... 9.1.2 (57 versions)14.11.1—
Magick.NET-Q8-OpenMP-arm6410.0.0 ... 9.1.2 (57 versions)14.11.1—
Magick.NET-Q8-OpenMP-x6410.0.0 ... 9.1.2 (109 versions)14.11.1—
Magick.NET-Q8-x6410.0.0 ... 9.1.2 (228 versions)14.11.1—
Magick.NET-Q8-x8610.0.0 ... 9.1.2 (228 versions)14.11.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:25 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-19 14:31 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-18 10:04 UTCEPSS rescore
  7. 2026-07-16 17:03 UTCEPSS rescore
  8. 2026-07-16 01:52 UTCGHSA enrichment
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 16:57 UTCEPSS rescore
  11. 2026-07-15 02:00 UTCEPSS rescore
  12. 2026-07-15 02:00 UTCEPSS rescore
  13. 2026-07-14 03:14 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  14. 2026-07-14 02:15 UTCMITRE cvelistV5CVSS v3 → 3.3 · severity → LOW
  15. 2026-07-13 22:31 UTCEPSS rescore
  16. 2026-07-13 16:08 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  17. 2026-07-13 08:19 UTCGHSA enrichment
  18. 2026-07-12 05:46 UTCEPSS rescore
  19. 2026-07-10 14:43 UTCEG score recompute
  20. 2026-07-10 14:42 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56366?
CVE-2026-56366 is a medium vulnerability published on July 10, 2026. 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.
When was CVE-2026-56366 disclosed?
CVE-2026-56366 was first published in the National Vulnerability Database on July 10, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56366 actively exploited?
CVE-2026-56366 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56366?
CVE-2026-56366 has a CVSS v3 base score of 6.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 3.3.
How do I remediate CVE-2026-56366?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56366, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-56366

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