An authenticated user could manipulate a company ID parameter in a POST request to the backend to gain unauthorised access to other companies hosted within the same subdomain environment. The application does not adequately verify whether the requested company ID belongs to the authenticated user’s session, resulting in a cross-tenant authorisation bypass. If this vulnerability is successfully exploited, it allows unauthorised access to sensitive customer information, including billing data, and may enable the unauthorised modification of third-party data.
CVE-2026-12686
CRITICALPre-NVD 9.39.3Trending — 3 sources updated this week
EchelonGraph scoreLOW confidence
This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). 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: secondary
9.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: —CVSS: 9.3Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.3
- EG Score
- 9.3(low)
- EPSS
- —
- KEV
- Not listed
Published
July 6, 2026
Last Modified
July 6, 2026
Advisory Details (1)
Auto-updated Jul 6, 2026No patch confirmed yet.
generic
Incorrect authorisation in Adiss’s Biloop | INCIBE-CERT | INCIBE
https://www.incibe.es/en/incibe-cert/notices/aviso/incorrect-authorisation-adisss-biloopVendor Advisories for CVE-2026-12686(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 10× in last 7d / 10× 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.
- 2026-07-07 03:41 UTCEG score recompute
- 2026-07-07 03:41 UTCGHSA enrichment
- 2026-07-06 23:15 UTCEG score recompute
- 2026-07-06 23:15 UTCGHSA enrichment
- 2026-07-06 18:57 UTCEG score recompute
- 2026-07-06 18:57 UTCGHSA enrichment
- 2026-07-06 14:40 UTCEG score recompute
- 2026-07-06 14:39 UTCGHSA enrichment
- 2026-07-06 10:22 UTCEG score recompute
- 2026-07-06 10:21 UTCMITRE cvelistV5first tracked
Frequently asked(4)
What is CVE-2026-12686?
CVE-2026-12686 is a critical vulnerability published on July 6, 2026. An authenticated user could manipulate a company ID parameter in a POST request to the backend to gain unauthorised access to other companies hosted within the same subdomain environment. The application does not adequately verify whether the requested company ID belongs to the authenticated user’s…
When was CVE-2026-12686 disclosed?
CVE-2026-12686 was first published in the National Vulnerability Database on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-12686?
CVE-2026-12686 has a CVSS v3 base score of 9.3 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-12686?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12686, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-12686
Is Your Infrastructure Affected by CVE-2026-12686?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.