CVE-2025-59933: libvips — Fix

Description

libvips is a demand-driven, horizontally threaded image processing library. For versions 8.17.1 and below, when libvips is compiled with support for PDF input via poppler, the pdfload operation is affected by a buffer read overflow when parsing the header of a crafted PDF with a page that defines a width but not a height. Those using libvips compiled without support for PDF input are unaffected as well as thosewith support for PDF input via PDFium. This issue is fixed in version 8.17.2. A workaround for those affected is to block the VipsForeignLoadPdf operation via vips_operation_block_set, which is available in most language bindings, or to set VIPS_BLOCK_UNTRUSTED environment variable at runtime, which will block all untrusted loaders including PDF input via poppler.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-126 CWE-126

Affected Products

Vendor	Product	Versions
libvips	libvips	< 8.17.2

References

Advisories & Patches

https://github.com/libvips/libvips/commit/a58bfae9223a5466cc81ba9fe6dfb08233cf17d1 https://github.com/libvips/libvips/security/advisories/GHSA-q8px-4w5q-c2r4

Other References

https://github.com/libvips/libvips/releases/tag/v8.17.2 https://www.vicarius.io/vsociety/posts/cve-2025-59933-detect-libvips-vulnerability https://www.vicarius.io/vsociety/posts/cve-2025-59933-mitigate-libvips-vulnerability

Frequently Asked Questions

What is CVE-2025-59933? +

libvips is a demand-driven, horizontally threaded image processing library. For versions 8.17.1 and below, when libvips is compiled with support for PDF input via poppler, the pdfload operation is affected by a buffer read overflow when parsing the header of a crafted PDF with a page that defines a width but not a height. Those using libvips compiled without support for PDF input are unaffected as well as thosewith support for PDF input via PDFium. This issue is fixed in version 8.17.2. A workaround for those affected is to block the VipsForeignLoadPdf operation via vips_operation_block_set, which is available in most language bindings, or to set VIPS_BLOCK_UNTRUSTED environment variable at runtime, which will block all untrusted loaders including PDF input via poppler. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-59933? +

CVE-2025-59933 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-59933? +

CVE-2025-59933 affects products from libvips, specifically: libvips. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-59933? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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