Categories
CVE-2026-59090 high CVSS 8.4

Vulnerability in GIMP's PSD file format plugin (CVE-2026-59090)

Summary

Vulnerability in GIMP's PSD file format plugin (CVE-2026-59090). Data can be tampered with by attackers. Exploitable via block_rem.

Original description

The description as published by the source.

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.

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-59090 has been found in GIMP's PSD file format plugin.
Attackers can target a specific entry point like block_rem over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 8.4/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "GIMP's PSD file format plugin CVE-2026-59090" on the vendor's site.

CVE-2026-59090 (GIMP's PSD file format plugin) — CWE-191 / CVSS v3 8.4
Attack vector: remote (network-reachable) / no user interaction
Attack surface: block_rem
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-191) exists in GIMP's PSD file format plugin. Attackers reach the vulnerable code path via block_rem.

📍 Affected scope

Check the vendor advisory for the affected versions of GIMP's PSD file format plugin. Attack surface: block_rem.

🔥 Severity

Severity: High (CVSS 8.4/10). Data can be tampered with by attackers.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで GIMP's PSD file format plugin を使っているサービスとバージョンを洗い出す。

  2. 2
    Post-deployment verification verify
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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