GHSA-r7rm-8j6h-r933 is a critical-severity (CVSS 9.8) CWE-120 vulnerability in pillow. A fix is available for pillow — see the affected versions and patch details below.
Buffer Copy without Checking Size of Input in Pillow
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-r7rm-8j6h-r933 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,636 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
pillowReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
libImaging/SgiRleDecode.c in Pillow before 6.2.2 has an SGI buffer overflow.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | pillow | all versions | 6.2.2pip install --upgrade 'pillow==6.2.2' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pillow, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update pillow to 6.2.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r7rm-8j6h-r933 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-r7rm-8j6h-r933 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-r7rm-8j6h-r933. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
This issue did not affect the versions of python-pillow and python-imaging as shipped with Red Hat Enterprise Linux 6, and 7 as they did not include the SGI RLE image decoder, where the flaw lies.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Enterprise Linux 8 | python-pillow-0:5.1.1-10.el8_1 | RHSA-2020:0580 |
| Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions | python-pillow-0:5.1.1-10.el8_0 | RHSA-2020:0566 |
| Red Hat Quay 3 | quay/clair-rhel8:v3.4.0-25 | RHSA-2021:0420 |
Frequently Asked Questions
Is GHSA-r7rm-8j6h-r933 in your dependencies?
O3 Security finds GHSA-r7rm-8j6h-r933 across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.