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python-pillow: Pillow: Denial of Service via excessive memory allocation when processing font files

🗓️ 04 Aug 2026 18:56:41Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 9 Views

Pillow DoS flaw: crafted font files cause excessive memory use and remote denial.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9aarch64python3.12-pillow12.3.0-1.el9appython3.12-pillow-12.3.0-1.el9ap.aarch64.rpm
Red Hat Enterprise Linux9ppc64lepython3.12-pillow12.3.0-1.el9appython3.12-pillow-12.3.0-1.el9ap.ppc64le.rpm
Red Hat Enterprise Linux9s390xpython3.12-pillow12.3.0-1.el9appython3.12-pillow-12.3.0-1.el9ap.s390x.rpm
Red Hat Enterprise Linux9x86_64python3.12-pillow12.3.0-1.el9appython3.12-pillow-12.3.0-1.el9ap.x86_64.rpm
Red Hat Enterprise Linux9aarch64python3.12-pillow-debuginfo12.3.0-1.el9appython3.12-pillow-debuginfo-12.3.0-1.el9ap.aarch64.rpm
Red Hat Enterprise Linux9ppc64lepython3.12-pillow-debuginfo12.3.0-1.el9appython3.12-pillow-debuginfo-12.3.0-1.el9ap.ppc64le.rpm
Red Hat Enterprise Linux9s390xpython3.12-pillow-debuginfo12.3.0-1.el9appython3.12-pillow-debuginfo-12.3.0-1.el9ap.s390x.rpm
Red Hat Enterprise Linux9x86_64python3.12-pillow-debuginfo12.3.0-1.el9appython3.12-pillow-debuginfo-12.3.0-1.el9ap.x86_64.rpm
Red Hat Enterprise Linux9aarch64python3.12-pillow-debugsource12.3.0-1.el9appython3.12-pillow-debugsource-12.3.0-1.el9ap.aarch64.rpm
Red Hat Enterprise Linux9ppc64lepython3.12-pillow-debugsource12.3.0-1.el9appython3.12-pillow-debugsource-12.3.0-1.el9ap.ppc64le.rpm
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21 Aug 2026 13:14Current
7.1High risk
Vulners AI Score7.1
CVSS 3.17.5
EPSS0.00418
SSVC
CWE-1050
pillow librarydenial of servicememory allocationfont processingcrafted fontsremote attacker
9