CVE-2026-54058: high-severity vulnerability in python-pillow Pillow
Pillow: Out-of-bounds read via attacker-controlled row stride on Pillow's mmap path (McIdas AREA files)
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.3epss 0.5%
Pillow is a Python imaging library. Prior to 12.3.0, when Pillow loads an uncompressed McIdas AREA image from a filename through the mmap raw codec path, attacker-controlled header words can set a row stride smaller than the natural row width, causing pixel access such as Image.tobytes(), getpixel, convert, or save to read beyond the mapped region and disclose adjacent process memory or fault. This issue is fixed in version 12.3.0.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
python-pillow · PillowRelated CVEs — python-pillow Pillow
In the same product, most dangerous first.
CVE-2026-112900CRITICALPillow: Argument Injection in Ghostscript call, potentially leading into RCEEPSS 1.3%CVE-2026-112393CRITICALPillow: Heap buffer overflow in _tiffWriteProc when saving TIFF to BytesIOEPSS 1.0%CVE-2026-112403CRITICALPillow: Heap buffer overflow in ImagingJpegDecodeEPSS 0.9%CVE-2026-112398CRITICALPillow: Heap buffer overflow in FlashPix (FPX) JPEG decoding leads to code executionEPSS 0.7%CVE-2026-112396MEDIUMPillow: Heap use-after-free when encoding TIFF to an in-memory bufferEPSS 0.7%CVE-2026-40192HIGHPillow is vulnerable to a FITS GZIP decompression bombEPSS 0.7%