CVE-2026-59204: python-pillow pillow
CVSS: 8.7v4.0HighModified
AliasesGHSA-vjc4-5qp5-m44jBIT-pillow-2026-59204PYSEC-2026-3496UBUNTU-CVE-2026-59204DEBIAN-CVE-2026-59204CGA-57fj-pf32-7qxwCGA-5w93-jg6q-8gm6CGA-cr4v-jxq9-2rj2CGA-cwhj-4v2j-8h83CGA-ffmg-5wqw-j4ppCGA-gcm2-c2gw-cwgxCGA-gh52-cqc9-mh37CGA-h4ff-hhv8-23gvCGA-jc7g-j3mv-4988CGA-jj3c-32cg-vw4vCGA-jr5w-33q8-58hgCGA-vg5g-pjm6-fjhrCGA-vw27-fc8g-3pxcCGA-wggg-xpp8-59hmCGA-x4h3-5m8c-64c2CGA-22gq-3vvx-48hqCGA-42p6-23cc-9557CGA-46x2-54fj-5r2wCGA-4jpw-68xx-fwhxCGA-4v7v-g92h-5w3mCGA-8fv3-52ff-pfp4CGA-8h62-5chj-7643CGA-c5g4-r6rr-fx4fCGA-c74f-mwqq-mvjrCGA-f725-623g-phj9CGA-jm4m-58r5-6q9jCGA-mqw6-4m9j-vr63CGA-mxmj-c94v-2j76CGA-rfv6-xwwh-g73wCGA-x32x-rpq4-77m6CGA-xjmj-4qmx-p5f2
Published 14-07-2026Last modified 21-07-2026
Vulnerability summary
CVE-2026-59204 is a high (CVSS 8.7) vulnerability in python-pillow pillow. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
8.7/10
010
High · v4.0 (CVE.org)EPSS score
0.39%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 7 · Related 7Timeline
- 14-07-2026PublishedVulnerability first disclosed.
- 21-07-2026Last modifiedVulnerability information updated.
Description
Pillow is a Python imaging library. From 8.2.0 through 12.2.0, src/libImaging/Jpeg2KDecode.c accumulates total_component_width across every tile in a JPEG2000 image instead of recomputing it per tile, allowing a crafted tiled JPEG2000 file to force substantially higher transient memory usage and trigger out-of-memory failures during decoding. This issue is fixed in version 12.3.0.
CVSS metrics
9 scores · 7 sources · 2 versionsHigh 8.7Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NSourcesAll 6 agree
- OSV · PypiEcosystem advisory · calculated8.7HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- OSV · UbuntuEcosystem advisory · calculated8.7HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- OSV · WolfiEcosystem advisory · calculated8.7HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- OSV · ChainguardEcosystem advisory · calculated8.7HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- NVDNIST8.7HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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 · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · DebianEcosystem 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
-0.01 pp
From 0.39% on 18-09-2026
18-09-202618-10-2026
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-789Memory Allocation with Excessive Size ValueThe product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
- CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
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-webui< 0.11.0-r0 | < 0.10.2-r1 | All versions (No fix recorded)
- openstack-horizon-2025.2< 25.5.2_git20260617-r4
Wolfi5 products
- mlflow< 3.14.0-r2 | < 3.16.0-r0
- open-webui< 0.11.0-r0 | < 0.10.2-r1 | All versions (No fix recorded)
- 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≥ 8.2.0, < 12.3.0
Python1 product
- pillow≥ 8.2.0, < 12.3.0
Python-pillow1 product
- pillow≥ 8.2.0, < 12.3.0
7 vendors · 26 products
References
12 links- github.com/python-pillow/Pillow/security/advisories/GHSA-vjc4-5qp5-m44jX Refsource CONFIRMWEBREPORTAdvisoryExploitVendor Advisory
- github.com/python-pillow/Pillow/commit/13ada41172142f2fd9f0906f615a00ea623a11caX Refsource MISCWEBFIXPatch
- pypi.org/project/pillowPACKAGE
