CVE-2026-101005

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory published 2026-09-28. A secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.3Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

A vulnerability was detected in October CMS up to 4.3.4. This affects the function validateExternalImageHost of the file System/Classes/ResizeImages.php of the component SSRF Protection. The manipulation results in server-side request forgery. The attack may be launched remotely. The exploit is now public and may be used. Upgrading to version 4.3.5 is able to mitigate this issue. You should upgrade the affected component.

CVSS v3
7.3
EG Score
7.3HIGHhigh confidence
EG Risk
64
EG Risk 64/100CISA 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
Severity73% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
0.3%
EPSS %ILE
20th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

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 yes (CISA Vulnrichment) · Technical impact partial (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 28, 2026

Last Modified

September 28, 2026

Advisory Details (3)

Auto-updated Sep 28, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Server-Side Request Forgery (SSRF) in October CMS - #VU149488

https://www.cybersecurity-help.cz/vdb/vulns/149488/
generic

CVE/October_CMS_SSRF_IPv6_Mapped_IPv4_Bypass.md at main · 0xGenesi/CVE · GitHub

https://github.com/0xGenesi/CVE/blob/main/October_CMS_SSRF_IPv6_Mapped_IPv4_Bypass.md
github Patch Available🟡 PoC Available

SSRF Filter Bypass via IPv4-Mapped IPv6 Addresses in Image Resizer · Advisory · octobercms/october · GitHub

Affected: v4.3.5. IPv4-mapped (

https://github.com/octobercms/october/security/advisories/GHSA-j2j7-7m99-6226

Vendor Advisories for CVE-2026-101005(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 / 34× 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. 2026-10-04 01:01 UTCEG score recompute
  2. 2026-10-04 01:01 UTCGHSA enrichment
  3. 2026-10-03 14:25 UTCEPSS rescore
  4. 2026-10-03 13:15 UTCGHSA enrichment
  5. 2026-10-03 01:29 UTCEG score recompute
  6. 2026-10-03 01:29 UTCGHSA enrichment
  7. 2026-10-02 13:42 UTCGHSA enrichment
  8. 2026-10-02 01:53 UTCEG score recompute
  9. 2026-10-02 01:53 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 14:07 UTCGHSA enrichment
  12. 2026-10-01 02:21 UTCEG score recompute
  13. 2026-10-01 02:21 UTCGHSA enrichment
  14. 2026-09-30 15:02 UTCEPSS rescore
  15. 2026-09-30 14:36 UTCGHSA enrichment
  16. 2026-09-30 02:46 UTCEG score recompute
  17. 2026-09-30 02:46 UTCGHSA enrichment
  18. 2026-09-29 15:20 UTCEPSS rescore
  19. 2026-09-29 15:00 UTCGHSA enrichment
  20. 2026-09-29 03:14 UTCEG score recompute
  21. 2026-09-29 03:14 UTCGHSA enrichment
  22. 2026-09-28 15:28 UTCEG score recompute
  23. 2026-09-28 15:28 UTCGHSA enrichment
  24. 2026-09-28 13:50 UTCEPSS rescore
  25. 2026-09-28 13:29 UTCEG score recompute
Show 9 more
  1. 2026-09-28 13:29 UTCGHSA enrichment
  2. 2026-09-28 13:29 UTCNVD updateCVSS v4 → 5.5
  3. 2026-09-28 13:07 UTCEG score recompute
  4. 2026-09-28 13:07 UTCGHSA enrichment
  5. 2026-09-28 13:07 UTCMITRE cvelistV5CVSS v4 → 6.9
  6. 2026-09-28 07:27 UTCEG score recompute
  7. 2026-09-28 07:26 UTCNVD updateCVSS v4 → 5.5
  8. 2026-09-28 06:44 UTCEG score recompute
  9. 2026-09-28 06:42 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-101005?
CVE-2026-101005 is a high vulnerability published on September 28, 2026. A vulnerability was detected in October CMS up to 4.3.4. This affects the function validateExternalImageHost of the file System/Classes/ResizeImages.php of the component SSRF Protection. The manipulation results in server-side request forgery. The attack may be launched remotely. The exploit is now…
When was CVE-2026-101005 disclosed?
CVE-2026-101005 was first published 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-2026-101005 actively exploited?
CVE-2026-101005 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (20th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-101005?
CVE-2026-101005 has a CVSS base score of 7.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-101005?
A fix for CVE-2026-101005 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-101005 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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