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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-28231

30
FAUCET Score

CVE-2026-28231 is an integer overflow vulnerability

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.0CPE matchmatch criteria
cpe:2.3:a:bigcat88:pillow-heif:*:*:*:*:*:python:*:*

CVSS Data

CVSS version used by this source: 4.0

5.5MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.63%
Probability of exploitation in next 30 days
EPSS Percentile
46.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 28th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: pi-heifFixed in: 1.3.0
pippatch availablevia ghsa
Product: pillow-heifFixed in: 1.3.0

Vendor Advisories (1)

pipGHSA-5gjj-6r7v-ph3xmedium

pillow-heif: Integer Overflow in Encode Path Buffer Validation Leads to Heap Out-of-Bounds Read

Jul 20, 2026

References

github.com / bigcat88/pillow_heif/commit/8305a15d3780c533b762578cbe987d27a2c59c7a
Patch
github.com / bigcat88/pillow_heif/releases/tag/v1.3.0
ProductRelease Notes
github.com / bigcat88/pillow_heif/security/advisories/GHSA-5gjj-6r7v-ph3x
ExploitMitigationVendor Advisory