CVE-2026-56366

MEDIUMNVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.2% (5th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 3.3 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-07-10) is not newer than that change (2026-07-14), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 10, 2026

Last Modified

July 14, 2026

Advisory Details (2)

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

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 advisoryMentions a patch (unverified)

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.

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuperlmagick (8:6.8.9.9-7ubuntu5.16+esm24) @ xenial2026-10-01ubuntu
ubuntuperlmagick (8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13) @ noble2026-10-01ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(22 across 5 ecosystems)
NuGet(18)
PackageVulnerable rangeFix by version rangeDependents
Magick.NET-Q16-AnyCPU10.0.0 ... 9.1.2 (212 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-arm6410.0.0 ... 9.1.2 (57 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-HDRI-AnyCPU10.0.0 ... 9.1.2 (209 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-HDRI-arm6410.0.0 ... 9.1.2 (57 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-HDRI-OpenMP-arm6410.0.0 ... 9.1.2 (57 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-HDRI-x6410.0.0 ... 9.1.2 (209 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-HDRI-x8610.0.0 ... 9.1.2 (209 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-OpenMP-arm6410.0.0 ... 9.1.2 (57 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-OpenMP-x6410.0.0 ... 9.1.2 (109 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-OpenMP-x86—
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-x6410.0.0 ... 9.1.2 (228 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q16-x8610.0.0 ... 9.1.2 (228 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q8-AnyCPU10.0.0 ... 9.1.2 (212 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q8-arm6410.0.0 ... 9.1.2 (57 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q8-OpenMP-arm6410.0.0 ... 9.1.2 (57 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q8-OpenMP-x6410.0.0 ... 9.1.2 (109 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q8-x6410.0.0 ... 9.1.2 (228 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Magick.NET-Q8-x8610.0.0 ... 9.1.2 (228 versions)
  • every version up to 14.11.1: fixed in 14.11.1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
imagemagick8:6.9.11.60+dfsg-1.3 ... 8:6.9.11.60+dfsg-1.3+deb11u9 (15 versions)
  • every version up to 8:6.9.11.60+dfsg-1.3+deb11u15: fixed in 8:6.9.11.60+dfsg-1.3+deb11u15
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
imagemagick8:6.9.11.60+dfsg-1.6 ... 8:6.9.11.60+dfsg-1.6+deb12u9 (12 versions)
  • every version up to 8:6.9.11.60+dfsg-1.6+deb12u12: fixed in 8:6.9.11.60+dfsg-1.6+deb12u12
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
imagemagick8:7.1.1.43+dfsg1-1 ... 8:7.1.1.43+dfsg1-1+deb13u9 (12 versions)
  • every version up to 8:7.1.1.43+dfsg1-1+deb13u12: fixed in 8:7.1.1.43+dfsg1-1+deb13u12
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
imagemagick8:7.1.1.43+dfsg1-1 ... 8:7.1.2.8+dfsg1-1 (13 versions)
  • every version up to 8:7.1.2.18+dfsg1-1: fixed in 8:7.1.2.18+dfsg1-1
—

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 11× in last 7d / 45× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 187 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 87 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-10-12 15:54 UTCEG score recompute
  4. 2026-10-11 19:38 UTCEG score recompute
  5. 2026-10-11 16:53 UTCEG score recompute
  6. 2026-10-11 14:16 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-01 15:54 UTCEG score recompute
  19. 2026-10-01 15:54 UTCVendor advisory
  20. 2026-10-01 15:54 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  21. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  23. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  24. 2026-09-28 09:50 UTCEG score recompute
  25. 2026-09-28 09:50 UTCVendor advisory
Show 75 more
  1. 2026-09-28 09:50 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  2. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  3. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  4. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  5. 2026-09-24 11:15 UTCEG score recompute
  6. 2026-09-24 11:15 UTCVendor advisory
  7. 2026-09-24 11:15 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  8. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  9. 2026-09-23 05:46 UTCEG score recompute
  10. 2026-09-23 05:46 UTCVendor advisory
  11. 2026-09-23 05:46 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  12. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  13. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  14. 2026-09-18 05:23 UTCEG score recompute
  15. 2026-09-18 05:23 UTCVendor advisory
  16. 2026-09-18 05:23 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  17. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  18. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  19. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-09-14 06:24 UTCEG score recompute
  22. 2026-09-14 06:24 UTCVendor advisory
  23. 2026-09-14 06:24 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  24. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-09-13 08:14 UTCEG score recompute
  26. 2026-09-13 08:14 UTCVendor advisory
  27. 2026-09-13 08:14 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  28. 2026-09-12 03:03 UTCEG score recompute
  29. 2026-09-12 03:03 UTCVendor advisory
  30. 2026-09-12 03:03 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  31. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  32. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  33. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  34. 2026-09-08 02:59 UTCEG score recompute
  35. 2026-09-08 02:59 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  36. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  37. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  38. 2026-09-05 21:49 UTCEG score recompute
  39. 2026-09-05 21:49 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  40. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  41. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  42. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  43. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  44. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  45. 2026-08-30 06:28 UTCEG score recompute
  46. 2026-08-30 06:28 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  47. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  48. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  49. 2026-08-28 02:40 UTCEG score recompute
  50. 2026-08-28 02:40 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  51. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  52. 2026-08-27 01:51 UTCEG score recompute
  53. 2026-08-27 01:51 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  54. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  55. 2026-08-26 03:40 UTCEG score recompute
  56. 2026-08-26 03:40 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  57. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  58. 2026-08-24 20:16 UTCEG score recompute
  59. 2026-08-24 20:16 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  60. 2026-08-23 18:19 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  61. 2026-08-22 20:09 UTCEG score recompute
  62. 2026-08-22 20:09 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  63. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  64. 2026-08-21 21:58 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  65. 2026-08-20 23:46 UTCEG score recompute
  66. 2026-08-20 23:46 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  67. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  68. 2026-08-20 01:35 UTCEG score recompute
  69. 2026-08-20 01:35 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  70. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  71. 2026-08-18 20:36 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  72. 2026-08-17 22:12 UTCEG score recompute
  73. 2026-08-17 22:12 UTCGHSA enrichmentGHSA-377p-xr9w-8773 · GitHub CVSS 3.3
  74. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  75. 2026-08-16 19:35 UTCEG score recompute

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-56366?
CVE-2026-56366 is a medium-severity vulnerability; its CVE record was 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 made public?
CVE-2026-56366 was made public on March 24, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on July 10, 2026. EchelonGraph's copy of the record carries a last-modified date of July 14, 2026; the record at its source may have been updated since.
Is CVE-2026-56366 actively exploited?
CVE-2026-56366 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-56366?
CVE-2026-56366 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-56366?
A fix for CVE-2026-56366 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-56366 are linked in the Vendor Advisories panel on this page.

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