CVE-2026-59199: python-pillow pillow Integer Overflow or Wraparound
CVSS: 7.5v3.1HighModified
AliasesGHSA-6r8x-57c9-28j4BIT-pillow-2026-59199PYSEC-2026-3451UBUNTU-CVE-2026-59199DEBIAN-CVE-2026-59199CGA-2c7h-m8hx-5j99CGA-3cwq-gmrc-8828CGA-6jqj-q956-2c47CGA-6xv3-4vq7-fxmmCGA-863p-2xwg-6p24CGA-9x5h-w454-x66hCGA-f2c3-93fh-rg3fCGA-h2m5-7cxh-53xrCGA-hxv7-67hx-2hf3CGA-j64j-5mhp-6jh6CGA-mfh4-7769-87v3CGA-mm9g-4672-q99hCGA-q394-985g-2fqmCGA-rxw7-74h9-c3wmCGA-wfc8-r2cg-gwhcCGA-37xw-cfc7-pmggCGA-4pr3-hh4q-98hjCGA-5c5f-jv35-hwqgCGA-775m-wf92-j6m2CGA-8xvg-52x7-hq5vCGA-h76c-wg9q-r85mCGA-jjcj-w388-8xmgCGA-jm3j-m6hh-237pCGA-m4rm-75wm-2hr4CGA-mxr3-5rmq-hmcxCGA-p3j2-f55h-52chCGA-px89-xfgx-5547CGA-q3w8-r7cm-mg4vCGA-vgcm-vghw-v866CGA-vjvc-95cp-xchwCGA-xqg7-6q69-5367
Published 14-07-2026Last modified 15-07-2026
Vulnerability summary
CVE-2026-59199 is a high (CVSS 7.5) Integer Overflow or Wraparound vulnerability in python-pillow pillow. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.39%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 14-07-2026PublishedVulnerability first disclosed.
- 15-07-2026Last modifiedVulnerability information updated.
Description
Pillow is a Python imaging library. Prior to 12.3.0, Pillow public image coordinate APIs can trigger a native heap out-of-bounds write when given coordinates near the signed 32-bit integer limits in Image.paste(), Image.crop(), or Image.alpha_composite(). This issue is fixed in version 12.3.0.
CVSS metrics
7 scores · 7 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 7 agree
- OSV · PypiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- 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 · WolfiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.39%
Chance of exploitation in the next 30 days
Percentile
31%
Versus all other CVEs
30-day change
0.00 pp
From 0.39% on 19-09-2026
19-09-202619-10-2026
EPSS score0.39%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundPillow
Maturity: poc
Weaknesses
CWE · root cause- CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Chainguard15 products
- label-studio< 1.23.0-r11
- lmcache-cuda-12.8< 0.5.3-r0
- mlflow< 3.14.0-r2 | < 3.16.0-r0
- open-webuiAll versions (No fix recorded) | < 0.11.0-r0 | < 0.10.2-r1
- openstack-horizon-2025.2< 25.5.2_git20260617-r4
Wolfi5 products
- mlflow< 3.14.0-r2 | < 3.16.0-r0
- open-webuiAll versions (No fix recorded) | < 0.11.0-r0 | < 0.10.2-r1
- superset-6.0< 6.0.0-r13
- superset-6.1< 6.1.0-r6
- superset-6.1-iamguarded-compatAll versions (No fix recorded)
Ubuntu2 products
- pillowAll versions (No fix recorded)
- pillow-python2All versions (No fix recorded)
Debian1 product
- pillowAll versions (No fix recorded) | < 12.3.0-1
PyPI1 product
- pillow< 12.3.0
Python1 product
- pillow< 12.3.0
Python-pillow1 product
- pillow< 12.3.0
7 vendors · 26 products
References
11 links- github.com/python-pillow/Pillow/security/advisories/GHSA-6r8x-57c9-28j4X Refsource CONFIRMWEBEVIDENCEREPORTAdvisoryExploitVendor Advisory
- github.com/python-pillow/Pillow/commit/ceefc348eb3c3844c7f9796ef2cc3a7dd5fbba7bX Refsource MISCWEBFIXPatch
