CVE-2026-106116CWE-835

CVE-2026-106116

Medium · published October 6, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
24.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00328 · 24.7th percentile
Weakness
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2026-10-06T22:16Z
Affected products (2)
ProductVersionsFixed in
sixlabors/imagesharp≥ 2.0.0, < 3.2.03.2.0
sixlabors/imagesharp≥ 4.0.0, < 4.1.24.1.2
References (5)
https://github.com/SixLabors/ImageSharp/commit/92b12d72550ebb6be5b1e22e559c361fd863a6ec · [email protected]https://github.com/SixLabors/ImageSharp/pull/3187 · [email protected]https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2 · [email protected]https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-wmxv-xphr-5c9g · [email protected]https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-wmxv-xphr-5c9g · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 08 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 06 OCT 17:51Z
    ImageSharp: BigTIFF IFD count can keep a decoder thread in a non-progressing loop
    cvelistv5