CVE-2026-72702

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-25. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Grav CMS before 2.0.16 contains an origin validation bypass in the Uri::referrer() and Pages::referrerRoute() methods, which validate the Referer header using an unanchored string prefix match (str_starts_with($referrer, $base)) with no trailing delimiter. An attacker who controls a domain that begins with the victim site's origin (e.g. https://example.com.attacker.tld) can send a request with such a Referer to be treated as same-origin, bypassing the Referer-based origin check.

CVSS v3
5.4
EG Score
5.4(high)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

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
Severity54% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Grav CMS before 2.0.16 Origin Validation Bypass via Referer | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-cms-before-origin-validation-bypass-via-referer
github Patch Available🟡 PoC Available

Origin validation bypass in Uri::referrer() and Pages::referrerRoute() via unanchored prefix match · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-9ccq-2jfg-qw33

Vendor Advisories for CVE-2026-72702(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 15× in last 7d / 68× 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. 2026-09-19 20:10 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 18:19 UTCEG score recompute
  4. 2026-09-17 16:11 UTCGHSA enrichment
  5. 2026-09-16 14:20 UTCEG score recompute
  6. 2026-09-16 14:20 UTCGHSA enrichment
  7. 2026-09-16 14:08 UTCEPSS rescore
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-15 12:28 UTCEG score recompute
  10. 2026-09-15 12:28 UTCGHSA enrichment
  11. 2026-09-15 03:12 UTCEPSS rescore
  12. 2026-09-14 10:36 UTCEG score recompute
  13. 2026-09-14 10:36 UTCGHSA enrichment
  14. 2026-09-13 08:44 UTCEG score recompute
  15. 2026-09-13 08:44 UTCGHSA enrichment
  16. 2026-09-12 15:02 UTCEPSS rescore
  17. 2026-09-12 06:53 UTCEG score recompute
  18. 2026-09-12 06:53 UTCGHSA enrichment
  19. 2026-09-11 14:53 UTCEPSS rescore
  20. 2026-09-11 05:01 UTCEG score recompute
  21. 2026-09-11 05:01 UTCGHSA enrichment
  22. 2026-09-10 09:35 UTCEPSS rescore
  23. 2026-09-10 03:10 UTCGHSA enrichment
  24. 2026-09-09 01:19 UTCEG score recompute
  25. 2026-09-09 01:19 UTCGHSA enrichment
Show 43 more
  1. 2026-09-08 22:01 UTCEPSS rescore
  2. 2026-09-07 08:08 UTCEG score recompute
  3. 2026-09-07 08:08 UTCGHSA enrichment
  4. 2026-09-06 13:48 UTCEPSS rescore
  5. 2026-09-06 06:17 UTCEG score recompute
  6. 2026-09-06 06:17 UTCGHSA enrichment
  7. 2026-09-05 04:25 UTCEG score recompute
  8. 2026-09-05 04:25 UTCGHSA enrichment
  9. 2026-09-04 05:07 UTCEPSS rescore
  10. 2026-09-04 02:34 UTCGHSA enrichment
  11. 2026-09-03 00:42 UTCEG score recompute
  12. 2026-09-03 00:42 UTCGHSA enrichment
  13. 2026-09-02 14:12 UTCEPSS rescore
  14. 2026-09-01 22:47 UTCEG score recompute
  15. 2026-09-01 22:47 UTCGHSA enrichment
  16. 2026-09-01 13:54 UTCEPSS rescore
  17. 2026-09-01 04:40 UTCEPSS rescore
  18. 2026-09-01 04:40 UTCEPSS rescore
  19. 2026-08-31 20:55 UTCGHSA enrichment
  20. 2026-08-31 00:27 UTCEG score recompute
  21. 2026-08-31 00:27 UTCGHSA enrichment
  22. 2026-08-30 19:18 UTCEPSS rescore
  23. 2026-08-30 19:17 UTCEPSS rescore
  24. 2026-08-30 01:22 UTCEPSS rescore
  25. 2026-08-29 22:36 UTCEG score recompute
  26. 2026-08-29 22:36 UTCGHSA enrichment
  27. 2026-08-28 21:42 UTCEPSS rescore
  28. 2026-08-28 20:45 UTCEG score recompute
  29. 2026-08-28 20:45 UTCGHSA enrichment
  30. 2026-08-28 19:51 UTCEG score recompute
  31. 2026-08-28 19:51 UTCGHSA enrichment
  32. 2026-08-28 08:04 UTCEG score recompute
  33. 2026-08-28 08:03 UTCGHSA enrichment
  34. 2026-08-27 14:25 UTCEPSS rescore
  35. 2026-08-27 06:09 UTCEG score recompute
  36. 2026-08-27 06:08 UTCGHSA enrichment
  37. 2026-08-26 14:47 UTCEPSS rescore
  38. 2026-08-26 04:13 UTCEG score recompute
  39. 2026-08-26 04:13 UTCGHSA enrichment
  40. 2026-08-25 13:49 UTCEPSS rescore
  41. 2026-08-25 02:19 UTCEG score recompute
  42. 2026-08-25 01:50 UTCEG score recompute
  43. 2026-08-25 01:50 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-72702?
CVE-2026-72702 is a medium vulnerability published on August 25, 2026. Grav CMS before 2.0.16 contains an origin validation bypass in the Uri::referrer() and Pages::referrerRoute() methods, which validate the Referer header using an unanchored string prefix match (strstartswith($referrer, $base)) with no trailing delimiter. An attacker who controls a domain that…
When was CVE-2026-72702 disclosed?
CVE-2026-72702 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72702 actively exploited?
CVE-2026-72702 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.9% of all scored CVEs.
What is the CVSS score of CVE-2026-72702?
CVE-2026-72702 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-72702?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72702, 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

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