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CVE-2026-112404— Pillow: OOB read in TiffDecode.c tile and RGBA paths leaks heap memory into pixels

Quick assessment

Affected

python-pillow Pillow

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Pillow 是一个 Python 图像处理库。在 8.1.0 至 13.0.0 版本期间，Pillow 的 TIFF 图块（tile）解码路径和 RGBA 解码路径可能读取超出 libtiff 所生成的行数据范围。在函数和 RGBA 解包路径中，当 Pillow 与 libtiff 对重复的或标签产生不同解读时，Pillow 未验证所需输入行是否完全位于 libtiff 生成的行数据范围内；而条带（strip）路径则具备此项验证。加载此类精心构造的 TIFF 文件可能导致输出像素中泄露相邻堆内存数据，或造成

CVSS 8.8 · High Updated Oct 20, 2026

Possible ATT&CK Techniques 2 AI

T1203 · Exploitation for Client Execution T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Pillow: OOB read in TiffDecode.c tile and RGBA paths leaks heap memory into pixels

Source: CVE Program / CVE List V5

Vulnerability Description

Pillow is a Python imaging library. From 8.1.0 until 13.0.0, Pillow's TIFF tile and RGBA decode paths can read beyond row data produced by libtiff. In _decodeTile and the RGBA unpacker path, when Pillow and libtiff interpret duplicated PhotometricInterpretation or BitsPerSample tags differently, Pillow does not verify that the required input row fits inside the row libtiff produced, while the strip path has this validation. Loading pixels from such a crafted TIFF can expose adjacent heap data in output pixels or crash the process. This issue is fixed in version 13.0.0.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

Source: CVE Program / CVE List V5

Vulnerability Type

缓冲区上溢读取

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
python-pillow	Pillow	>= 8.1.0, < 13.0.0	-

II. Public POCs for CVE-2026-112404

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

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III. Intelligence Information for CVE-2026-112404

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Same Patch Batch · python-pillow · 2026-10-19 · 27 CVEs total

CVE-2026-112393	9.2 CRITICAL	Pillow: Heap buffer overflow in _tiffWriteProc when saving TIFF to BytesIO
CVE-2026-112403	9.2 CRITICAL	Pillow: Heap buffer overflow in ImagingJpegDecode
CVE-2026-112900	9.2 CRITICAL	Pillow: Argument Injection in Ghostscript call, potentially leading into RCE
CVE-2026-112398	9.2 CRITICAL	Pillow: Heap buffer overflow in FlashPix (FPX) JPEG decoding leads to code execution
CVE-2026-112896	8.8 HIGH	Pillow: TIFF encoder ColorMap plane-size mismatch causes a heap out-of-bounds read
CVE-2026-112894	8.7 HIGH	Pillow: Quadratic-time DoS in PDF save_all (PdfParser.next_object_id)
CVE-2026-112895	8.7 HIGH	Pillow: Unbounded recursion parsing a PDF page tree or trailer chain (incomplete fix for C
CVE-2026-112405	8.7 HIGH	Pillow: NULL pointer dereference in Image.merge via an unvalidated band 0
CVE-2026-112892	8.7 HIGH	Pillow: MSP RLE decoder expands a tiny file into unbounded memory
CVE-2026-112406	8.7 HIGH	Pillow: Infinite loop in PdfParser.rewrite_pages on page tree Parent cycle
CVE-2026-112897	8.7 HIGH	Pillow: TiffDecode returns uninitialized memory as pixels for short JPEG strips
CVE-2026-112400	8.7 HIGH	Pillow: GIF seek keeps rejected size after DecompressionBombError, allowing DoS
CVE-2026-112402	8.7 HIGH	Pillow: Double free in ImagingScaleAffine on calloc failure via Image.transform
CVE-2026-112397	8.7 HIGH	Pillow: Out-of-bounds access in _imagingmorph on a zero-width image
CVE-2026-112399	8.7 HIGH	Pillow: APNG background disposal allocates full canvas before decompression bomb check
CVE-2026-112392	8.2 HIGH	Pillow: NULL dereference in ImagingExpand via rank filters on zero-size images
CVE-2026-112390	8.2 HIGH	Pillow: Infinite loop in MIC n_frames when the embedded TIFF
CVE-2026-112893	8.2 HIGH	Pillow: Invalid free in FreeType glyph rendering when a stroker is active
CVE-2026-112898	6.9 MEDIUM	Pillow: Image.quantize() with empty palette leaks uninitialized stack memory
CVE-2026-112901	6.9 MEDIUM	Pillow: ReDoS in XbmImagePlugin: 512-byte file stalls Image.open() for minutes

Showing top 20 of 27 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Pillow

Same vendor: python-pillow

Same weakness: CWE-126

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CVE-2026-112404— Pillow: OOB read in TiffDecode.c tile and RGBA paths leaks heap memory into pixels

Quick assessment

Possible ATT&CK Techniques 2 AI

I. Basic Information for CVE-2026-112404

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-112404

III. Intelligence Information for CVE-2026-112404

Patches & Fixes for CVE-2026-112404 (1)

Vendor Advisories for CVE-2026-112404 (1)

Vendor Pages for CVE-2026-112404 (1)

Same Patch Batch · python-pillow · 2026-10-19 · 27 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-112404

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