Grav CMS before 2.0.16 contains a timing vulnerability in Utils::verifyNonce() that uses non-constant-time string comparison with the === operator instead of hash_equals() for CSRF nonce validation. Attackers can measure response timing differences to recover valid nonce values byte-by-byte through multiple requests, weakening CSRF protection below its intended security margin.
CVE-2026-72701
Score 3.7 from GitHub Security Advisory published 2026-08-25. a secondary CVSS source baseline 3.7; sources differ by 0.0.
- 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
- 3.7
- EG Score
- 3.7(high)
- EG Risk
- 33(Track)EG Risk 33/100SSVC: 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 computedSeverity37% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 8%
- KEV
- Not listed
Published
August 25, 2026
Last Modified
August 31, 2026
References (3)
- disclosure@vulncheckhttps://github.com/getgrav/grav/security/advisories/GHSA-38p6-h87p-r4cg
- disclosure@vulncheckhttps://www.vulncheck.com/advisories/grav-cms-before-timing-attack-via-verifynonce
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/getgrav/grav/security/advisories/GHSA-38p6-h87p-r4cg
Vendor Advisories for CVE-2026-72701(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 9× in last 7d / 38× 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 19:28 UTCEPSS rescore
- 2026-09-16 15:42 UTCEG score recompute
- 2026-09-16 15:42 UTCGHSA enrichment
- 2026-09-16 14:08 UTCEPSS rescore
- 2026-09-16 05:15 UTCEPSS rescore
- 2026-09-15 03:12 UTCEPSS rescore
- 2026-09-13 11:43 UTCEG score recompute
- 2026-09-13 11:43 UTCGHSA enrichment
- 2026-09-12 15:02 UTCEPSS rescore
- 2026-09-10 09:35 UTCEPSS rescore
- 2026-09-10 08:01 UTCEG score recompute
- 2026-09-10 08:01 UTCGHSA enrichment
- 2026-09-08 22:01 UTCEPSS rescore
- 2026-09-07 04:19 UTCEG score recompute
- 2026-09-07 04:19 UTCGHSA enrichment
- 2026-09-06 13:48 UTCEPSS rescore
- 2026-09-04 05:07 UTCEPSS rescore
- 2026-09-04 00:37 UTCEG score recompute
- 2026-09-04 00:37 UTCGHSA enrichment
- 2026-09-02 14:12 UTCEPSS rescore
- 2026-09-01 13:54 UTCEPSS rescore
- 2026-08-31 20:55 UTCGHSA enrichment
- 2026-08-30 21:18 UTCEG score recompute
- 2026-08-30 21:18 UTCGHSA enrichment
- 2026-08-30 19:18 UTCEPSS rescore
Show 13 moreShow fewer
- 2026-08-30 19:17 UTCEPSS rescore
- 2026-08-30 01:22 UTCEPSS rescore
- 2026-08-28 21:42 UTCEPSS rescore
- 2026-08-27 17:37 UTCEG score recompute
- 2026-08-27 17:37 UTCGHSA enrichment
- 2026-08-27 17:14 UTCEG score recompute
- 2026-08-27 17:14 UTCGHSA enrichment
- 2026-08-27 14:25 UTCEPSS rescore
- 2026-08-26 14:47 UTCEPSS rescore
- 2026-08-25 13:49 UTCEPSS rescore
- 2026-08-25 02:19 UTCEG score recompute
- 2026-08-25 01:50 UTCEG score recompute
- 2026-08-25 01:50 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-72701?
When was CVE-2026-72701 disclosed?
Is CVE-2026-72701 actively exploited?
What is the CVSS score of CVE-2026-72701?
How do I remediate CVE-2026-72701?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-72701
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