CVE-2026-59197

HIGHPre-NVD 8.28.2
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (36th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — Patch released this weekElevated
8.2EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.2Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and ImagingExpand() computes output dimensions with unchecked signed int arithmetic. This issue is fixed in version 12.3.0.

CVSS v3
8.2
EG Score
8.2HIGHmedium confidence
EG Risk
68
EG Risk 68/100

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)
Severity82% × 45%
The EG Score, 8.2 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
36th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (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 14, 2026

Last Modified

July 21, 2026

Advisory Details (4)

Auto-updated Jul 14, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)

Heap out-of-bounds write in Pillow `ImageFilter.RankFilter` via integer overflow in `ImagingExpand` · Advisory · python-pillow/Pillow · GitHub

https://github.com/python-pillow/Pillow/security/advisories/GHSA-xj96-63gp-2gmr
GitHub release Patch Available

12.3.0

Patch available: python-pillow/Pillow 12.3.0

https://github.com/python-pillow/Pillow/releases/tag/12.3.0
GitHub pull request Patch Available

Validate large filter sizes when initializing RankFilter

Patch available: python-pillow/Pillow 12.3.0 (PR #9695 merged 2026-06-21)

https://github.com/python-pillow/Pillow/pull/9695
GitHub commit Patch Available

commit cce3bdb867c7 (python-pillow/Pillow)

Patch available: python-pillow/Pillow 12.3.0 (contains commit cce3bdb867c7)

https://github.com/python-pillow/Pillow/commit/cce3bdb867c77a3420261ed1bfdb6b0787ec8fc1

Vendor Advisories for CVE-2026-59197(20)

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

Patch Availability(29)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatquay/quay-rhel9:17912655902026-10-12redhat
redhatrhelai3/disk-image-cuda-rhel9:17909574172026-10-05redhat
redhatrhelai3/bootc-rocm-rhel9:17906144472026-10-05redhat
redhatrhoai/odh-mlflow-rhel9:17896536062026-09-30redhat
redhatrhaii/model-opt-cuda-rhel9:17900764982026-09-23redhat
redhatrhaii/vllm-spyre-rhel9:17900761412026-09-23redhat
redhatrhaii/vllm-rocm-rhel9:17901096202026-09-23redhat
redhatrhaii/vllm-cuda-rhel9:17900901312026-09-23redhat
redhatrhaii/vllm-cpu-rhel9:17900757932026-09-23redhat
redhatquay/quay-rhel8:17885938432026-09-22redhat
redhatrhaii/vllm-cuda-rhel9:17896811262026-09-21redhat
redhatrhaii/model-opt-cuda-rhel9:17896811262026-09-21redhat
redhatrhaii/vllm-spyre-rhel9:17896812012026-09-21redhat
redhatrhaii/vllm-rocm-rhel9:17896811262026-09-21redhat
redhatquay/quay-rhel9:17895637532026-09-21redhat
redhatrhaii/vllm-cpu-rhel9:17896811282026-09-21redhat
redhatrhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9:17870735932026-08-27redhat
redhatpython-pillow-0:5.1.1-20.el8_6.12026-08-13redhat
redhatpython-pillow-0:5.1.1-20.el8_8.12026-08-12redhat
redhatquay/quay-rhel9:17861819812026-08-12redhat
redhatquay/quay-rhel8:17863950652026-08-11redhat
redhatquay/quay-rhel8:17861706352026-08-10redhat
redhatpython-pillow-0:5.1.1-15.el8_4.22026-08-10redhat
redhatquay/quay-rhel8:17859500042026-08-05redhat
redhatpython3.12-pillow-0:12.3.0-1.el9ap2026-08-04redhat
redhatansible-automation-platform-27/lightspeed-chatbot-rhel9:17854267342026-08-04redhat
redhatansible-automation-platform-26/lightspeed-chatbot-rhel9:17856461882026-08-04redhat
redhatpython-pillow-0:12.3.0-1.el9pc2026-08-04redhat
redhatquay/quay-rhel8:17852615062026-07-30redhat

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
pillow10.0.0-1 ... 9.5.0-1 (38 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
pillow10.0.0-1 ... 9.5.0-1 (23 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pillow11.1.0-5 ... 12.3.0-1 (13 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pillow11.1.0-5 ... 12.2.0-1 (8 versions)
  • every version up to 12.3.0-1: fixed in 12.3.0-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
pillow1.0 ... 9.5.0 (106 versions)
  • every version up to 12.3.0: fixed in 12.3.0
—

Weakness Classification(2)

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

Additional Vendor Advisories

(10)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 13× in last 7d / 42× 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 207 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 107 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 0.4% · 36th percentile
  2. 2026-10-13 16:15 UTCEG score recompute
  3. 2026-10-13 16:15 UTCVendor advisory
  4. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  5. 2026-10-12 15:52 UTCEG score recompute
  6. 2026-10-11 19:36 UTCEG score recompute
  7. 2026-10-11 16:51 UTCEG score recompute
  8. 2026-10-11 14:14 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  17. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  18. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  20. 2026-10-01 13:23 UTCEG score recompute
  21. 2026-10-01 13:23 UTCVendor advisory
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-09-28 09:20 UTCEG score recompute
Show 75 more
  1. 2026-09-28 09:20 UTCVendor advisory
  2. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  3. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  4. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  5. 2026-09-24 09:51 UTCEG score recompute
  6. 2026-09-24 09:51 UTCVendor advisory
  7. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  8. 2026-09-23 03:55 UTCEG score recompute
  9. 2026-09-23 03:55 UTCVendor advisory
  10. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  11. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 38th percentile
  12. 2026-09-18 04:54 UTCEG score recompute
  13. 2026-09-18 04:54 UTCVendor advisory
  14. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  15. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  16. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  17. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  18. 2026-09-13 23:27 UTCEG score recompute
  19. 2026-09-13 23:27 UTCVendor advisory
  20. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  21. 2026-09-13 07:53 UTCEG score recompute
  22. 2026-09-13 07:53 UTCVendor advisory
  23. 2026-09-12 14:30 UTCVendor advisory
  24. 2026-09-12 01:45 UTCEG score recompute
  25. 2026-09-12 01:45 UTCVendor advisory
  26. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  27. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  28. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  29. 2026-09-08 01:44 UTCEG score recompute
  30. 2026-09-08 01:44 UTCVendor advisory
  31. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  32. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  33. 2026-09-06 13:46 UTCVendor advisory
  34. 2026-09-05 21:17 UTCEG score recompute
  35. 2026-09-05 21:17 UTCVendor advisory
  36. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  37. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  38. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  39. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  40. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  41. 2026-08-30 18:04 UTCVendor advisory
  42. 2026-08-30 05:19 UTCEG score recompute
  43. 2026-08-30 05:19 UTCVendor advisory
  44. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  45. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  46. 2026-08-27 21:33 UTCEG score recompute
  47. 2026-08-27 21:33 UTCVendor advisory
  48. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  49. 2026-08-27 03:14 UTCEG score recompute
  50. 2026-08-27 03:14 UTCVendor advisory
  51. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  52. 2026-08-26 14:29 UTCVendor advisory
  53. 2026-08-26 01:44 UTCEG score recompute
  54. 2026-08-26 01:44 UTCVendor advisory
  55. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  56. 2026-08-25 10:54 UTCVendor advisory
  57. 2026-08-24 22:02 UTCEG score recompute
  58. 2026-08-24 22:02 UTCVendor advisory
  59. 2026-08-24 09:16 UTCVendor advisory
  60. 2026-08-23 19:41 UTCVendor advisory
  61. 2026-08-23 06:56 UTCEG score recompute
  62. 2026-08-23 06:56 UTCVendor advisory
  63. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  64. 2026-08-22 18:10 UTCVendor advisory
  65. 2026-08-22 05:25 UTCEG score recompute
  66. 2026-08-22 05:25 UTCVendor advisory
  67. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  68. 2026-08-21 16:40 UTCVendor advisory
  69. 2026-08-21 03:32 UTCEG score recompute
  70. 2026-08-21 03:32 UTCVendor advisory
  71. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  72. 2026-08-20 14:39 UTCVendor advisory
  73. 2026-08-20 01:05 UTCEG score recompute
  74. 2026-08-20 01:05 UTCVendor advisory
  75. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.4% · 36th percentile

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

Frequently asked(5)

What is CVE-2026-59197?
CVE-2026-59197 is a high-severity vulnerability; its CVE record was published on July 14, 2026. Pillow is a Python imaging library. Prior to 12.3.0, Pillow's public rank-filter API can trigger a native heap out-of-bounds write when given a very large odd filter size because ImageFilter.RankFilter.filter() calls image.expand(size // 2, size // 2) before rank-filter size validation and…
When was the CVE record for CVE-2026-59197 published?
The CVE record for CVE-2026-59197 was published on July 14, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 21, 2026; the record at its source may have been updated since.
Is CVE-2026-59197 actively exploited?
CVE-2026-59197 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59197?
CVE-2026-59197 has a CVSS base score of 8.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-59197?
A fix for CVE-2026-59197 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59197 are linked in the Vendor Advisories panel on this page.

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