Cotonti through 1.0.0 fails to validate anti-CSRF tokens in the ratings plugin AJAX handler, allowing attackers to forge ratings on behalf of authenticated users. Attackers can craft malicious pages that auto-submit POST requests to modify stored rating data when visited by logged-in users.
CVE-2026-93870
MEDIUMPre-NVD 4.34.3
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 4.3 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
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 4.3Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 4.3
- EG Score
- 4.3(low)
- EG Risk
- 24(Track)EG Risk 24/100SSVC: 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 computedSeverity43% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
September 18, 2026
Last Modified
September 18, 2026
Advisory Details (5)
Auto-updated Sep 18, 2026🔬 Proof of concept available. No patch confirmed yet. Sources: github_pr.
generic
Cotonti through 1.0.0 Cross-Site Request Forgery in the Ratings Plugin AJAX Handler | Advisories | VulnCheck
https://www.vulncheck.com/advisories/cotonti-through-1.0.0-cross-site-request-forgery-in-the-ratings-plugin-ajax-handlergeneric
GitHub - Cotonti/Cotonti: Fast, reliable and flexible PHP CMF/CMS · GitHub
https://github.com/Cotonti/Cotontigeneric
Cotonti/plugins/ratings/ratings.ajax.php at 1.0.0 · Cotonti/Cotonti · GitHub
https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/ratings/ratings.ajax.phpgithub_pr
security: add CSRF guard to ratings send action (CWE-352)
Upstream fix in progress (PR #1900 · Cotonti/Cotonti, state=open)
https://github.com/Cotonti/Cotonti/pull/1900generic🟡 PoC Available
[Security] CSRF on star ratings submission — missing cot_check_xg() in ratings.ajax.php (CWE-352) · Issue #1892 · Cotonti/Cotonti · GitHub
https://github.com/Cotonti/Cotonti/issues/1892Vendor Advisories for CVE-2026-93870(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 3× in last 7d / 3× 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.
- 2026-09-18 20:30 UTCEG score recompute
- 2026-09-18 19:59 UTCEG score recompute
- 2026-09-18 19:59 UTCMITRE cvelistV5first tracked
Frequently asked(4)
What is CVE-2026-93870?
CVE-2026-93870 is a medium vulnerability published on September 18, 2026. Cotonti through 1.0.0 fails to validate anti-CSRF tokens in the ratings plugin AJAX handler, allowing attackers to forge ratings on behalf of authenticated users. Attackers can craft malicious pages that auto-submit POST requests to modify stored rating data when visited by logged-in users.
When was CVE-2026-93870 disclosed?
CVE-2026-93870 was first published in the National Vulnerability Database on September 18, 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-2026-93870?
CVE-2026-93870 has a CVSS v3 base score of 4.3 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-93870?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-93870, 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-2026-93870
Is Your Infrastructure Affected by CVE-2026-93870?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.