CVE-2026-106116

ImageSharp is a 2D graphics library. From 2.0.0 until 4.1.2, ExifReader.ReadValues64 trusts the 64-bit BigTIFF IFD entry count and iterates once per declared entry. When fewer than 20 bytes remain, ExifReader.ReadValue64 returns without advancing the stream or terminating the outer loop, so a small malformed BigTIFF can keep one decoder thread executing for an attacker-controlled duration. This report does not claim worker-pool exhaustion. This issue is fixed in version 4.1.2.

CVSS 3.1

5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS

0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-25)

CWE

CWE-835

Published

2026-10-06

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

Affected

• sixlabors:imagesharp

References

• https://github.com/SixLabors/ImageSharp/commit/92b12d72550ebb6be5b1e22e559c361fd863a6ec
• https://github.com/SixLabors/ImageSharp/pull/3187
• https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2
• https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-wmxv-xphr-5c9g
• https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-wmxv-xphr-5c9g

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