8.7

CVE-2026-112892: Pillow: MSP RLE decoder expands a tiny file into unbounded memory

Analyzed
AliasesDEBIAN-CVE-2026-112892GHSA-gg2r-wvfm-q9rxCGA-7r75-rrgw-72h9
Published 19-10-2026Last modified 22-10-2026

Vulnerability summary

CVE-2026-112892 is a high (CVSS 8.7) vulnerability in python-pillow pillow. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 43% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 8.7 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
8.7/10
010
High · v4.0 (CVE.org)
EPSS score
0.50%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:12230-1SUSE-SU-2026:5038-1

Timeline

  1. 19-10-2026
    PublishedVulnerability first disclosed.
  2. 22-10-2026
    Last modifiedVulnerability information updated.

Description

Pillow is a Python imaging library. From 4.1.0 until 13.0.0, Pillow's MSP RLE decoder can expand a small file into an unbounded in-memory buffer. The decoder writes run-length output to BytesIO without limiting expansion to the declared image size. An attacker can supply a crafted MSP image to an application that loads its pixels. This can exhaust memory and deny service even when the declared pixel count passes the decompression-bomb check. This issue is fixed in version 13.0.0.

CVSS metrics

9 scores · 7 sources · 2 versions

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

20-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard23 products
  • apache-beam-python-3.12-sdkAll versions (No fix recorded) | < 2.77.0-r5
  • mlflowAll versions (No fix recorded) | < 3.17.2-r2
  • mlflow-fipsAll versions (No fix recorded) | < 3.17.2-r3
  • nemo-gym< 0.5.0_rc0_git20260729-r6
  • nemo-rl-cuda-13.0-automodelAll versions (No fix recorded)
Wolfi6 products
  • mlflowAll versions (No fix recorded)
  • open-webuiAll versions (No fix recorded) | < 0.12.3-r6
  • py3.10-pillowAll versions (No fix recorded)
  • py3.11-pillowAll versions (No fix recorded) | < 13.0.0-r0
  • py3.12-pillowAll versions (No fix recorded) | < 13.0.0-r0
Ubuntu2 products
  • pillowAll versions (No fix recorded)
  • pillow-python2All versions (No fix recorded)
Debian1 product
  • pillowAll versions (No fix recorded)
PyPI1 product
  • pillow≥ 4.1.0, < 13.0.0
Python1 product
Python-pillow1 product

7 vendors · 35 products

References

9 links