What’s Vulnerable › Vulnerabilities

CVE-2026-70654: libvips: A well-crafted PPM image processed via a custom source could lead to possible heap buffer write overflow

• Severity: medium (CVSS 5.8 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-20 · updated 2026-10-26
• Weakness: CWE-122

Description

libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, applications that define unusual custom libvips sources and use them to process untrusted uncompressed PPM images can trigger a max/min error in vips_source_read_to_memory in libvips/iofuncs/source.c. The function uses VIPS_MAX instead of VIPS_MIN when selecting the remaining read size, allowing up to 4032 bytes to be written beyond the allocated heap buffer and causing memory corruption or a process crash. This issue is fixed in version 8.18.3.

Affected products

• libvips: before 8.18.3

References

• https://github.com/libvips/libvips/commit/80e021c6cdda0f80b756c2109d99839c94c03258
• https://github.com/libvips/libvips/pull/5038
• https://github.com/libvips/libvips/releases/tag/v8.18.3
• https://github.com/libvips/libvips/security/advisories/GHSA-rjmm-3qch-m9rg

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