CVE-2026-39919

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-15. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Ghostscript before 10.08.0 contains a heap-based buffer overflow vulnerability in the JPEG 2000 output adapter (base/sjpx_openjpeg.c) that allows attackers to cause memory corruption by supplying a crafted PDF containing a JPEG 2000 image with mismatched component subsampling factors. When image components declare different subsampling values, the non-samescale sub-byte-depth output path allocates a row buffer sized for packed output but writes a full byte per output column regardless of bit depth, overflowing the allocation and corrupting internal chunk-allocator metadata to achieve code execution.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

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 computed
Severity98% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 20, 2026

Advisory Details (4)

Auto-updated Sep 20, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github_commit.
generic

Ghostscript < 10.08.0 Heap Buffer Overflow via JPEG 2000 Output Adapter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/ghostscript-heap-buffer-overflow-via-jpeg-2000-output-adapter
github_commit

commit 0a8bf88e39db (ArtifexSoftware/ghostpdl)

Fix landed in ArtifexSoftware/ghostpdl commit 0a8bf88e39db — awaiting tagged release

https://github.com/ArtifexSoftware/ghostpdl/commit/0a8bf88e39db07b0751a58d6ec1cf992073e4dc1
github_release Patch Available

Ghostscript/GhostPDL 10.08.0

Patch available: ArtifexSoftware/ghostpdl-downloads gs10080

https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs10080
generic🟡 PoC Available

709666 – Heap buffer overflow in the JPEG 2000 (JPXDecode) output adapter via component subsampling mismatch (base/sjpx_openjpeg.c)

https://bugs.ghostscript.com/show_bug.cgi?id=709666

Vendor Advisories for CVE-2026-39919(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 49× in last 7d / 49× 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.

  1. 2026-09-21 04:57 UTCGHSA enrichment
  2. 2026-09-21 01:03 UTCGHSA enrichment
  3. 2026-09-20 21:07 UTCGHSA enrichment
  4. 2026-09-20 17:13 UTCGHSA enrichment
  5. 2026-09-20 13:16 UTCGHSA enrichment
  6. 2026-09-20 09:21 UTCGHSA enrichment
  7. 2026-09-20 05:26 UTCGHSA enrichment
  8. 2026-09-20 01:31 UTCEG score recompute
  9. 2026-09-20 01:31 UTCGHSA enrichment
  10. 2026-09-20 01:02 UTCEG score recompute
  11. 2026-09-20 01:02 UTCGHSA enrichment
  12. 2026-09-19 22:59 UTCGHSA enrichment
  13. 2026-09-19 19:04 UTCEG score recompute
  14. 2026-09-19 19:03 UTCGHSA enrichment
  15. 2026-09-19 15:07 UTCGHSA enrichment
  16. 2026-09-19 11:10 UTCGHSA enrichment
  17. 2026-09-19 07:15 UTCGHSA enrichment
  18. 2026-09-19 03:20 UTCGHSA enrichment
  19. 2026-09-18 23:25 UTCGHSA enrichment
  20. 2026-09-18 19:31 UTCEG score recompute
  21. 2026-09-18 19:31 UTCGHSA enrichment
  22. 2026-09-18 19:28 UTCEPSS rescore
  23. 2026-09-18 19:28 UTCEPSS rescore
  24. 2026-09-18 15:34 UTCGHSA enrichment
  25. 2026-09-18 11:35 UTCGHSA enrichment
Show 24 more
  1. 2026-09-18 07:39 UTCGHSA enrichment
  2. 2026-09-18 03:44 UTCGHSA enrichment
  3. 2026-09-17 23:49 UTCEG score recompute
  4. 2026-09-17 23:49 UTCGHSA enrichment
  5. 2026-09-17 19:30 UTCEPSS rescore
  6. 2026-09-17 19:22 UTCGHSA enrichment
  7. 2026-09-17 14:39 UTCGHSA enrichment
  8. 2026-09-17 10:44 UTCGHSA enrichment
  9. 2026-09-17 06:46 UTCGHSA enrichment
  10. 2026-09-17 02:51 UTCGHSA enrichment
  11. 2026-09-16 22:52 UTCGHSA enrichment
  12. 2026-09-16 18:57 UTCGHSA enrichment
  13. 2026-09-16 15:02 UTCEG score recompute
  14. 2026-09-16 15:02 UTCGHSA enrichment
  15. 2026-09-16 14:08 UTCEPSS rescore
  16. 2026-09-16 11:06 UTCGHSA enrichment
  17. 2026-09-16 07:11 UTCGHSA enrichment
  18. 2026-09-16 03:16 UTCGHSA enrichment
  19. 2026-09-15 23:21 UTCGHSA enrichment
  20. 2026-09-15 19:26 UTCEG score recompute
  21. 2026-09-15 19:26 UTCGHSA enrichment
  22. 2026-09-15 15:31 UTCEG score recompute
  23. 2026-09-15 14:33 UTCEG score recompute
  24. 2026-09-15 14:32 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-39919?
CVE-2026-39919 is a critical vulnerability published on September 15, 2026. Ghostscript before 10.08.0 contains a heap-based buffer overflow vulnerability in the JPEG 2000 output adapter (base/sjpx_openjpeg.c) that allows attackers to cause memory corruption by supplying a crafted PDF containing a JPEG 2000 image with mismatched component subsampling factors. When image…
When was CVE-2026-39919 disclosed?
CVE-2026-39919 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39919 actively exploited?
CVE-2026-39919 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 59.1% of all scored CVEs.
What is the CVSS score of CVE-2026-39919?
CVE-2026-39919 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-39919?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39919, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-39919

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