CVE-2026-59090

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 57% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this weekElevated
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.9Exploit: Elevated riskExposed: 0

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

A flaw was found in GIMP's PSD file format plugin. This vulnerability, an unsigned integer underflow in the block_rem variable, occurs when a user opens a specially crafted .psd image file. The underflow leads to parser confusion, enabling an attacker to inject arbitrary data as layer resource blocks. This can ultimately result in arbitrary code execution, allowing the attacker to run malicious code on the victim's system.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
61(Track*)
EG Risk 61/100SSVC: 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
Severity99% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (3)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. Patch available. Sources: redhat.
generic🟡 PoC Available

(CVE-2026-59090) PSD `block_rem` Unsigned Underflow → Parser Confusion (#16509) · Issues · GNOME / GIMP · GitLab

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16509
redhat

2496584 – (CVE-2026-59090) CVE-2026-59090 gimp: GIMP: Arbitrary code execution in PSD plugin due to unsigned underflow

https://bugzilla.redhat.com/show_bug.cgi?id=2496584
redhat Patch Available

CVE-2026-59090 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-59090

Vendor Advisories for CVE-2026-59090(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 34× in last 7d / 58× 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. 2026-08-21 03:23 UTCGHSA enrichment
  2. 2026-08-20 23:00 UTCEG score recompute
  3. 2026-08-20 23:00 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 18:39 UTCGHSA enrichment
  6. 2026-08-20 14:17 UTCGHSA enrichment
  7. 2026-08-20 09:22 UTCGHSA enrichment
  8. 2026-08-20 05:00 UTCGHSA enrichment
  9. 2026-08-20 00:38 UTCGHSA enrichment
  10. 2026-08-19 20:16 UTCEG score recompute▲ 1.50
  11. 2026-08-19 20:16 UTCGHSA enrichment
  12. 2026-08-19 20:15 UTCNVD updateCVSS v3 → 9.9 · severity → CRITICAL
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-19 14:48 UTCGHSA enrichment
  15. 2026-08-19 01:56 UTCEG score recompute
  16. 2026-08-19 01:56 UTCGHSA enrichment
  17. 2026-08-18 13:48 UTCEPSS rescore
  18. 2026-08-18 13:07 UTCGHSA enrichment
  19. 2026-08-18 00:18 UTCEG score recompute
  20. 2026-08-18 00:18 UTCGHSA enrichment
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 11:25 UTCGHSA enrichment
  23. 2026-08-16 22:36 UTCEG score recompute
  24. 2026-08-16 22:36 UTCGHSA enrichment
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 33 more
  1. 2026-08-16 09:46 UTCEG score recompute
  2. 2026-08-16 09:46 UTCGHSA enrichment
  3. 2026-08-16 02:14 UTCEPSS rescore
  4. 2026-08-15 20:58 UTCGHSA enrichment
  5. 2026-08-15 08:09 UTCEG score recompute
  6. 2026-08-15 08:09 UTCGHSA enrichment
  7. 2026-08-15 01:30 UTCEPSS rescore
  8. 2026-08-14 19:19 UTCGHSA enrichment
  9. 2026-08-14 18:39 UTCGHSA enrichment
  10. 2026-08-14 05:50 UTCEG score recompute
  11. 2026-08-14 05:50 UTCGHSA enrichment
  12. 2026-08-13 22:00 UTCEPSS rescore
  13. 2026-08-13 17:01 UTCGHSA enrichment
  14. 2026-08-13 04:12 UTCEG score recompute
  15. 2026-08-13 04:12 UTCGHSA enrichment
  16. 2026-08-12 15:24 UTCEG score recompute
  17. 2026-08-12 15:24 UTCGHSA enrichment
  18. 2026-08-12 13:51 UTCEPSS rescore
  19. 2026-08-12 05:37 UTCEG score recompute
  20. 2026-08-12 05:37 UTCGHSA enrichment
  21. 2026-08-12 04:28 UTCEG score recompute
  22. 2026-08-12 04:28 UTCGHSA enrichment
  23. 2026-08-11 17:22 UTCEG score recompute
  24. 2026-08-11 17:22 UTCGHSA enrichment
  25. 2026-08-11 04:23 UTCEG score recompute
  26. 2026-08-11 04:23 UTCGHSA enrichment
  27. 2026-08-11 04:08 UTCEG score recompute
  28. 2026-08-11 04:08 UTCGHSA enrichment
  29. 2026-08-11 03:18 UTCEG score recompute
  30. 2026-08-11 03:18 UTCGHSA enrichment
  31. 2026-08-10 13:24 UTCEG score recompute
  32. 2026-08-10 12:17 UTCEG score recompute
  33. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59090?
CVE-2026-59090 is a critical vulnerability published on August 10, 2026. A flaw was found in GIMP's PSD file format plugin. This vulnerability, an unsigned integer underflow in the block_rem variable, occurs when a user opens a specially crafted .psd image file. The underflow leads to parser confusion, enabling an attacker to inject arbitrary data as layer resource…
When was CVE-2026-59090 disclosed?
CVE-2026-59090 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59090 actively exploited?
CVE-2026-59090 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.6% of all scored CVEs.
What is the CVSS score of CVE-2026-59090?
CVE-2026-59090 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-59090?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59090, 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

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