Vulnerability involving incorrect access control in the Tools::getRemoteAddr() function in PrestaShop, which allows the client’s IP address to be spoofed via the X-Forwarded-For header when the application is running behind a reverse proxy, load balancer or CDN. The application incorrectly processes the IP address string and uses the address controlled by the visitor rather than the one provided by the trusted infrastructure, allowing an unauthenticated remote attacker to cause the application to interpret their connection as originating from an arbitrary IP address. This condition allows IP-based controls, such as the maintenance mode allowlist, to be bypassed, as well as enabling the forgery of security and audit logs and the evasion of third-party mechanisms that rely on the IP address, such as geolocation checks, fraud detection or request throttling.
CVE-2026-84186
This medium-severity CVE scores 6.9 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 71% of all CVEs by exploit prediction. 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).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.9
- EG Score
- 6.9(medium)
- EG Risk
- 46(Track)EG Risk 46/100SSVC: 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 computedSeverity69% × 45%Exploitation0% × 40%Automatability100% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 29%
- KEV
- Not listed
Published
September 7, 2026
Last Modified
September 8, 2026
References (1)
- cve-coordination@incibehttps://www.incibe.es/en/incibe-cert/notices/aviso/incorrect-access-control-prestashop
Vendor Advisories for CVE-2026-84186(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 20× in last 7d / 39× 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.
- 2026-09-19 16:48 UTCEG score recompute
- 2026-09-19 16:48 UTCGHSA enrichment
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-18 14:54 UTCEG score recompute
- 2026-09-18 14:54 UTCGHSA enrichment
- 2026-09-17 19:32 UTCEPSS rescore
- 2026-09-17 13:00 UTCEG score recompute
- 2026-09-17 13:00 UTCGHSA enrichment
- 2026-09-16 14:09 UTCEPSS rescore
- 2026-09-16 10:44 UTCEG score recompute
- 2026-09-16 10:44 UTCGHSA enrichment
- 2026-09-16 05:15 UTCEPSS rescore
- 2026-09-15 08:50 UTCEG score recompute
- 2026-09-15 08:50 UTCGHSA enrichment
- 2026-09-15 03:12 UTCEPSS rescore
- 2026-09-15 03:12 UTCEPSS rescore
- 2026-09-14 06:55 UTCEG score recompute
- 2026-09-14 06:55 UTCGHSA enrichment
- 2026-09-13 05:02 UTCEG score recompute
- 2026-09-13 05:02 UTCGHSA enrichment
- 2026-09-12 03:07 UTCEG score recompute
- 2026-09-12 03:07 UTCGHSA enrichment
- 2026-09-11 14:53 UTCEPSS rescore
- 2026-09-11 14:53 UTCEPSS rescore
- 2026-09-11 01:13 UTCEG score recompute
Show 14 moreShow fewer
- 2026-09-11 01:13 UTCGHSA enrichment
- 2026-09-09 23:18 UTCEG score recompute
- 2026-09-09 23:18 UTCGHSA enrichment
- 2026-09-08 22:01 UTCEPSS rescore
- 2026-09-08 19:53 UTCGHSA enrichment
- 2026-09-08 16:47 UTCEG score recompute
- 2026-09-08 16:47 UTCGHSA enrichment
- 2026-09-08 16:02 UTCEG score recompute
- 2026-09-08 16:02 UTCGHSA enrichment
- 2026-09-08 11:24 UTCEG score recompute
- 2026-09-08 11:24 UTCGHSA enrichment
- 2026-09-07 09:30 UTCEG score recompute
- 2026-09-07 08:53 UTCEG score recompute
- 2026-09-07 08:51 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-84186?
When was CVE-2026-84186 disclosed?
Is CVE-2026-84186 actively exploited?
What is the CVSS score of CVE-2026-84186?
How do I remediate CVE-2026-84186?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-84186
Is Your Infrastructure Affected by CVE-2026-84186?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.