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Vulnerabilities

Security fix · CVE-2026-112392

Pillow is a Python imaging library.

Published Oct 19, 2026 · catalog updated Oct 27, 2026 · Pillow is a Python

Last checked Oct 30, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-112392. EPSS is 0.59%. Act only if a listed version of Pillow is a Python is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Pillow is a Python).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.59%
Remediation
Version ranges on file
Affected products
Bitnami pillow · pip Pillow · pypi pillow

Applying Pillow's median, minimum, maximum or rank filter to an image with zero width or zero height crashes the whole Python process instead of raising an error. Empty images like this are easy to produce with ordinary calls, for example a crop box whose left and right edges (or top and bottom edges) are equal, or the second page of a crafted multi-page image file. An attacker who can supply crop coordinates or an uploaded file to an application that runs one of these filters can kill its worker process. The effect is a crash only, with no memory disclosure or corruption. The fault is in in . This is the edge-padding step that always runs through the core method, so , and go through it too. It fills the margin by copying the input's edge pixels, reading and rows / , and never checks that the input has any pixels. For an empty image, leaves the line pointers NULL, so the first read dereferences NULL and the process dies with SIGSEGV, in every mode. Zero-size images reach this point through public API alone: - , and ; - a multi-page TIFF opened by path whose second IFD declares , on which and succeed. Every other returns an empty image for the same inputs. The zero-height case has crashed since the original PIL import, and the zero-width case since Pillow 4.3.0. This is separate from the fix in #9755: the path is the same, but here the degenerate value is the image size rather than the kernel size. It has the same shape as the zero-dimension crash fixed under GHSA-f87v-9578-p47w. The attached reproducer shows a one-pixel-wide control crop filtering normally, while four empty crops passed through the rank filters are each killed by SIGSEGV. A patch that returns early in for empty input is included. ## Details ( ), the edge-padding helper that runs before the actual rank filter, reads the first pixel of each input line without checking that the input has any pixels. For an image with width 0 or height 0 the line pointers are NULL, so with , , or kills the interpreter w

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Bitnami pillow0 → 13.0.0
  • pip Pillow<= 12.3.0
  • pypi pillowversion unspecified

How to fix CVE-2026-112392

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-112392. EPSS is 0.59%. Act only if a listed version of Pillow is a Python is installed.

Which versions are affected?

Compare what you have installed with Pillow <= 12.3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-476: NULL Pointer Dereference. EPSS 0.59%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Pillow security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 19, 2026 · NIST NVD

    Detected

    Pillow is a Python imaging library. Prior to 13.0.0, Pillow's rank-based filters can dereference invalid image storage for a zero-size image. ImagingExpand() allocates a non-empty output and then faults while replicating edges by reading the first pixel from empty input storage; ImagingRankFilter is never reached. An attacker can supply or cause creation of a zero-size image to an application that

  2. Oct 20, 2026 · NIST NVD

    Updated

    Pillow is a Python imaging library. Prior to 13.0.0, Pillow's rank-based filters can dereference invalid image storage for a zero-size image. ImagingExpand() allocates a non-empty output and then faults while replicating edges by reading the first pixel from empty input storage; ImagingRankFilter is never reached. An attacker can supply or cause creation of a zero-size image to an application that

  3. Oct 20, 2026 · NIST NVD

    Updated

    Pillow is a Python imaging library. Prior to 13.0.0, Pillow's rank-based filters can dereference invalid image storage for a zero-size image. ImagingExpand() allocates a non-empty output and then faults while replicating edges by reading the first pixel from empty input storage; ImagingRankFilter is never reached. An attacker can supply or cause creation of a zero-size image to an application that

  4. Oct 21, 2026 · GitHub Advisory Database

    Updated

    Applying Pillow's median, minimum, maximum or rank filter to an image with zero width or zero height crashes the whole Python process instead of raising an error. Empty images like this are easy to produce with ordinary calls, for example a crop box whose left and right edges (or top and bottom edges) are equal, or the second page of a crafted multi-page image file. An attacker who can supply crop

  5. Oct 27, 2026 · GitHub Advisory Database

    Fix available

    pillow fixed in 13.0.0

  6. Oct 27, 2026 · GitHub Advisory Database

    Fix available

    pillow fixed in 13.0.0

  7. Oct 27, 2026 · GitHub Advisory Database

    Updated

    Pillow is a Python imaging library. Prior to 13.0.0, Pillow's rank-based filters can dereference invalid image storage for a zero-size image. ImagingExpand() allocates a non-empty output and then faults while replicating edges by reading the first pixel from empty input storage; ImagingRankFilter is never reached. An attacker can supply or cause creation of a zero-size image to an application that

Sources

  • CVE.orgVulnerability recordCVE-2026-112392

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-112392

    30-day exploitation probability 0.59%

    first.org
  • GitHub Advisory DatabasePackage advisoryGHSA-27h8-gf7j-v5hc

    GitHub Advisory Database record mirrored by OSV.

    github.com
  • GitLab Advisory DatabasePackage advisoryCVE-2026-112392

    ============================================================================ NULL dereference in ImagingExpand via rank filters on zero-size images Location: src/libImaging/Filter.c:79 in ImagingExpand() Commit: a707c6b21c313880d0771e54965d142dd42358b6 ============================================================================ Applying Pillow's median, minimum, maximum or rank filter to an image

    advisories.gitlab.com
  • NIST NVDVulnerability recordCVE-2026-112392

    Pillow is a Python imaging library. Prior to 13.0.0, Pillow's rank-based filters can dereference invalid image storage for a zero-size image. ImagingExpand() allocates a non-empty output and then faults while replicating edges by reading the first pixel from empty input storage;

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryBIT-pillow-2026-112392

    Pillow: NULL dereference in ImagingExpand via rank filters on zero-size images

    osv.dev

References

Freshness

Last verified in this catalog Oct 30, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 30, 2026
  • GitHub Advisory DatabaseOct 28, 2026
  • OpenSSF OSV / OSV ScannerOct 28, 2026
  • GitLab Advisory DatabaseOct 23, 2026
  • CVE.orgOct 21, 2026
  • NIST NVDOct 21, 2026