CVE-2026-39353

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (36th 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).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2-rc-1, InvoicePlane builds its permitted template list by scanning a PHP template directory that can be written through an administrator-controlled file-write capability. A malicious PHP file placed in the directory is automatically trusted by Mdl_templates and can be selected as public_invoice_template. When a public invoice is rendered, the guest View controller includes the trusted file and executes it with web-server privileges. This issue is fixed in version 1.7.2-rc-1.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
57
EG Risk 57/100CISA 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 computed
Severity91% × 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
0.4%
EPSS %ILE
36th
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 28, 2026

Advisory Details (4)

Auto-updated Sep 25, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available

v1.7.2-rc-1

Patch available: InvoicePlane/InvoicePlane v1.7.2-rc-1

https://github.com/InvoicePlane/InvoicePlane/releases/tag/v1.7.2-rc-1
github_commit Patch Available

commit 00e599db2580 (InvoicePlane/InvoicePlane)

Patch available: InvoicePlane/InvoicePlane v1.7.2-rc-1 (contains commit 00e599db2580)

https://github.com/InvoicePlane/InvoicePlane/commit/00e599db25804024eb323cfb751349bf3b1d8e8a
github_pr Patch Available

Address PR review: security hardening, bug fixes, and code quality improvements

Patch available: InvoicePlane/InvoicePlane v1.7.2-rc-1 (PR #1536 merged 2026-04-25)

https://github.com/InvoicePlane/InvoicePlane/pull/1536
github Patch Available🟡 PoC Available

Remote Code Execution via Writable Templates Directory in InvoicePlane v1.7.1 · Advisory · InvoicePlane/InvoicePlane · GitHub

https://github.com/InvoicePlane/InvoicePlane/security/advisories/GHSA-v735-2x3r-gwpp

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 19× 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. 2026-10-03 17:55 UTCEG score recompute
  2. 2026-10-03 14:25 UTCEPSS rescore
  3. 2026-10-02 17:27 UTCEG score recompute
  4. 2026-10-01 21:04 UTCEG score recompute
  5. 2026-10-01 19:49 UTCEPSS rescore
  6. 2026-09-30 16:35 UTCEG score recompute
  7. 2026-09-30 15:03 UTCEPSS rescore
  8. 2026-09-29 15:36 UTCEG score recompute
  9. 2026-09-28 23:21 UTCEG score recompute
  10. 2026-09-28 15:12 UTCEG score recompute
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-27 14:59 UTCEG score recompute
  13. 2026-09-27 13:48 UTCEPSS rescore
  14. 2026-09-26 18:39 UTCEG score recompute
  15. 2026-09-26 15:58 UTCEPSS rescore
  16. 2026-09-25 17:44 UTCEG score recompute
  17. 2026-09-25 16:24 UTCEG score recompute
  18. 2026-09-25 15:35 UTCEG score recompute
  19. 2026-09-25 15:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-39353?
CVE-2026-39353 is a critical vulnerability published on September 25, 2026. InvoicePlane is a self-hosted open source application for managing invoices, clients, and payments. Prior to 1.7.2-rc-1, InvoicePlane builds its permitted template list by scanning a PHP template directory that can be written through an administrator-controlled file-write capability. A malicious…
When was CVE-2026-39353 disclosed?
CVE-2026-39353 was first published on September 25, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39353 actively exploited?
CVE-2026-39353 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-39353?
CVE-2026-39353 has a CVSS base score of 9.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-39353?
A fix for CVE-2026-39353 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-39353

Explore →

Is Your Infrastructure Affected by CVE-2026-39353?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs