CVE-2026-106116ImageSharp: BigTIFF IFD count can keep a decoder thread in a non-progressing loop
Updated under an hour ago ()
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It affects SixLabors ImageSharp. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-835
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Undergoing Analysis
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
SixLabors ImageSharp sixlabors:imagesharp (from the name) | from 2.0.0, < 4.1.2 | CNA record |
References
- https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-wmxv-xphr-5c9gx-refsource-confirm
- https://github.com/SixLabors/ImageSharp/pull/3187x-refsource-misc
- https://github.com/SixLabors/ImageSharp/commit/92b12d72550ebb6be5b1e22e559c361fd863a6ecx-refsource-misc
- https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.2x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.