Piwigo before v16.4.0 is vulnerable to arbitrary file read and remote code execution in image upload handling when using the Imagick library due to insufficient validation and unsafe processing of user-supplied image files. By abusing format confusion (e.g., disguising SVG content as PNG), an attacker can trigger unintended interpretation of embedded SVG elements that reference local files. In more advanced scenarios, the Imagick support for Magick Scripting Language (MSL) may be abused to process attacker-controlled instructions, potentially leading to unauthorized server-side file writes and remote code execution, depending on configuration. This has been patched in 16.4.0.
CVE-2026-85750
This high-severity CVE scores 7.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.2% (67th percentile of EPSS-scored CVEs). 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).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.2
- EG Score
- 7.2HIGHmedium confidence
- EG Risk
- 48EG Risk 48/100CISA 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 computedSeverity72% × 45%Exploitation40% × 40%Automatability0% × 15%CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.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
- 1.2%
- EPSS %ILE
- 67th
- KEV
- Not listed
CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.
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 no (CISA Vulnrichment) · Technical impact total (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
September 25, 2026
Last Modified
September 25, 2026
Advisory Details (2)
Auto-updated Sep 25, 2026Arbitrary file read and remote code execution via insecure image processing · Advisory · Piwigo/Piwigo · GitHub
https://github.com/Piwigo/Piwigo/security/advisories/GHSA-j9q6-q52g-g8jwWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 14× in last 7d / 21× 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.
- 2026-10-03 18:09 UTCEG score recompute
- 2026-10-03 14:26 UTCEPSS rescore
- 2026-10-03 05:49 UTCEG score recompute
- 2026-10-02 17:57 UTCEPSS rescore
- 2026-10-02 05:32 UTCEG score recompute
- 2026-10-01 19:50 UTCEPSS rescore
- 2026-09-30 17:03 UTCEG score recompute
- 2026-09-30 15:04 UTCEPSS rescore
- 2026-09-29 16:47 UTCEG score recompute
- 2026-09-29 04:25 UTCEG score recompute
- 2026-09-28 16:16 UTCEG score recompute
- 2026-09-28 13:52 UTCEPSS rescore
- 2026-09-27 15:58 UTCEG score recompute
- 2026-09-27 13:48 UTCEPSS rescore
- 2026-09-27 03:50 UTCEG score recompute
- 2026-09-26 15:59 UTCEPSS rescore
- 2026-09-25 15:23 UTCEG score recompute
- 2026-09-25 14:53 UTCEG score recompute
- 2026-09-25 14:22 UTCEG score recompute
- 2026-09-25 14:02 UTCEG score recompute
- 2026-09-25 13:59 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-85750?
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Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-85750
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