ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, decoding a strip TIFF using CCITT Group 3 or Modified Huffman compression can pass attacker-expanded runs to BitWriterUtils.WriteBits without first checking the current row width. T4TiffCompression.WritePixelRun can accumulate oversized makeup-code runs, and ModifiedHuffmanTiffCompression.Decompress validates the width only after writing. The unchecked writes can overflow the strip buffer, corrupt heap memory, and terminate the process. This strip-path vulnerability is distinct from the tiled decompressor-width mismatch. This issue is fixed in version 4.1.1.
CVE-2026-106117
HIGHPre-NVD 7.57.5Elevated
EchelonGraph scoreLOW confidence
This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHlow confidence
- EG Risk
- 65EG Risk 65/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation40% × 40%Automatability100% × 15%CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
October 6, 2026
Last Modified
October 6, 2026
Advisory Details (4)
Auto-updated Oct 6, 2026🔬 Proof of concept available. Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available
v4.1.1
Patch available: SixLabors/ImageSharp v4.1.1
https://github.com/SixLabors/ImageSharp/releases/tag/v4.1.1github_commit Patch Available
commit e8892ecd8a95 (SixLabors/ImageSharp)
Patch available: SixLabors/ImageSharp v4.1.1 (contains commit e8892ecd8a95)
https://github.com/SixLabors/ImageSharp/commit/e8892ecd8a95dee95c4480fda51cfe0b32f3b846github_pr Patch Available
Fix CCITT decompressor bounds checks and error handling
Patch available: SixLabors/ImageSharp v4.1.1 (PR #3176 merged 2026-08-20)
https://github.com/SixLabors/ImageSharp/pull/3176githubMentions a patch (unverified)🟡 PoC Available
CCITT fax decompression (T4/Modified Huffman): unbounded WriteBits overflows strip buffer — heap OOB write in SixLabors.ImageSharp · Advisory · SixLabors/ImageSharp · GitHub
https://github.com/SixLabors/ImageSharp/security/advisories/GHSA-jj3q-cwqj-842rVendor Advisories for CVE-2026-106117(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
NuGet(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| ImageSharp | — |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 4× in last 7d / 4× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-06 19:37 UTCEG score recompute
- 2026-10-06 18:31 UTCEG score recompute
- 2026-10-06 18:02 UTCEG score recompute
- 2026-10-06 18:01 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same CWE)
Frequently asked(4)
What is CVE-2026-106117?
CVE-2026-106117 is a high vulnerability published on October 6, 2026. ImageSharp is a 2D graphics library. From 3.0.0 until 4.1.1, decoding a strip TIFF using CCITT Group 3 or Modified Huffman compression can pass attacker-expanded runs to BitWriterUtils.WriteBits without first checking the current row width. T4TiffCompression.WritePixelRun can accumulate oversized…
When was CVE-2026-106117 disclosed?
CVE-2026-106117 was first published on October 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-106117?
CVE-2026-106117 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-106117?
A fix for CVE-2026-106117 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-106117 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-106117
Is Your Infrastructure Affected by CVE-2026-106117?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.