Out-of-bounds read in Pillow
Published Jun 25, 2020 · Updated Oct 23, 2026 · Also known as BIT-pillow-2020-10378, GHSA-3xv8-3j54-hgrp, PYSEC-2020-77
Original summary
Normalized public record · Updated Oct 23, 2026
Out-of-bounds read in Pillow
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
In `libImaging/PcxDecode.c` in Pillow before 7.1.0, an out-of-bounds read can occur when reading PCX files where `state->shuffle` is instructed to read beyond `state->buffer`.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- BIT-pillow-2020-10378, GHSA-3xv8-3j54-hgrp, PYSEC-2020-77
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- GitHub advisory ↗
- Source repository ↗
- Patch commit ↗
- pillow.readthedocs.io ↗
- FEDORA-2020-c52106e48a ↗
- FEDORA-2020-d0737711b6 ↗
- USN-4430-1 ↗
- USN-4430-2 ↗
Record history
Published Jun 25, 2020 · Last refreshed Oct 23, 2026