Vulnerability Description
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit and png_write_image_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libpng | Libpng | >= 1.6.26, < 1.6.54 |
Related Weaknesses (CWE)
References
- https://github.com/pnggroup/libpng/security/advisories/GHSA-vgjq-8cw5-ggw8Third Party Advisory
FAQ
What is CVE-2026-22801?
CVE-2026-22801 is a vulnerability with a CVSS score of 6.8 (MEDIUM). LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the...
How severe is CVE-2026-22801?
CVE-2026-22801 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-22801?
Check the references section above for vendor advisories and patch information. Affected products include: Libpng Libpng.